September Chelsea played their first game of the new
Premier League season on 14 September 2020, travelling to
Brighton & Hove Albion and earning a 3–1 away victory, courtesy of goals from
Jorginho,
Kurt Zouma and
Reece James. On 20 September, Chelsea welcomed defending champions
Liverpool to
Stamford Bridge.
Andreas Christensen was
dismissed in the first half after a naive challenge on
Sadio Mané, who then proceeded to score
two goals inside four minutes for Liverpool, with goalkeeper
Kepa Arrizabalaga making a crucial mistake for Mané's second goal. New signing
Timo Werner managed to win a penalty for Chelsea, but Jorginho had his effort saved by
Alisson, his first penalty miss in nine attempts, as the match ended in a 2–0 defeat for Chelsea. Three days later, Chelsea faced
Barnsley in the
EFL Cup, which ended in a 6–0 win for Chelsea, with
Kai Havertz scoring a
hat-trick for the Blues. Chelsea then travelled to
The Hawthorns to play
West Bromwich Albion. Chelsea were 3–0 down at half-time, but goals from
Mason Mount,
Callum Hudson-Odoi, and
Tammy Abraham in stoppage-time managed to seal a draw as the match ended 3–3. On 29 September, Chelsea took on
London rivals Tottenham Hotspur in the round of 16 in the EFL Cup. Timo Werner scored his first Chelsea goal to put the Blues ahead, but
Erik Lamela managed to equalise in the second half. Chelsea would go on to lose 5–4 on penalties, with Mason Mount missing the decisive penalty and Chelsea finding themselves eliminated from the EFL Cup. Reece James' goal against Brighton was nominated for the
Premier League Goal of the Month award, but was won by
Leicester City's
James Maddison.
October Chelsea's first match of October was against
Crystal Palace at home. After no goals in the first half, Chelsea managed to win 4–0, as
Ben Chilwell registered a goal and an assist on his Premier League debut for Chelsea. Two weeks later, on 17 October, Chelsea welcomed
Southampton to Stamford Bridge. Timo Werner scored his first Premier League goals for Chelsea as the Blues were leading 2–0 inside 28 minutes, with
Danny Ings managing to pull a goal back for the Saints before half-time.
Che Adams scored an equaliser for Southampton 57 minutes in, but Chelsea instantly responded with a Kai Havertz goal two minutes later, his first in the Premier League. Chelsea were pegged back again in the 92nd minute, with
Jannik Vestergaard levelling the game, as Chelsea managed to come out of the game with a frustrating 3–3 draw. In their next two games, Chelsea drew back-to-back games 0–0, first against
Sevilla at home in their first
Champions League group stage game of the season, and then again away at
Manchester United in the Premier League. Chelsea then defeated
Krasnodar 4–0 away in the Champions League, with Callum Hudson-Odoi, Timo Werner,
Hakim Ziyech, and
Christian Pulisic all on target for the Blues. In Chelsea's final game of the month on 31 October, they defeated
Burnley 3–0 away, with Hakim Ziyech scoring and assisting on his first Premier League start, with additional goals from Kurt Zouma and Timo Werner sealing the win for Chelsea. As a result of his performances throughout the month,
Thiago Silva was nominated for the
Premier League Player of the Month award, which was eventually won by Tottenham Hotspur's
Heung-min Son, and Timo Werner's first goal against Southampton was nominated for Premier League Goal of the Month, but was instead given to
West Ham United's
Manuel Lanzini.
November Chelsea begun November with a 3–0 home victory over
Rennes in the Champions League, with the goals coming from two Timo Werner penalties and a Tammy Abraham strike. Three days later, in Chelsea's last match before the November international break, Chelsea faced bottom of the league
Sheffield United at home, who had lost seven out of their first eight Premier League games this season. The match ended in a comfortable 4–1 win for the Blues, which saw Hakim Ziyech pick up two assists. After the international break, Chelsea returned on 21 November to face
Newcastle United at
St James' Park. Chelsea ran out 2–0 winners, with a
Federico Fernández own goal and a goal from Tammy Abraham sealing the win for Chelsea, marking the first time Chelsea were top of the Premier League under
Frank Lampard. Chelsea won their sixth consecutive game in a row in their next match against Rennes in the Champions League, which saw Callum Hudson-Odoi and
Olivier Giroud on the scoresheet in a 2–1 away victory, sealing qualification for the Champions League round of 16. Chelsea next had inform London rivals Tottenham Hotspur to play at Stamford Bridge, who had already eliminated Chelsea from the EFL Cup back in September. The match ended in goalless 0–0 draw, which saw Tottenham ascend to the top of the league. Ben Chilwell's performances throughout November earned a nomination for the Premier League Player of the Month award, which was by Manchester United's
Bruno Fernandes, and Frank Lampard's managerial duties saw him nominated for
Premier League Manager of the Month, which was instead by Tottenham Hotspur's
José Mourinho.
December Chelsea's first game of the busy December period was at Sevilla in the Champions League group stage. Frank Lampard's Blues ran out 4–0 winners, with Olivier Giroud scoring all four goals for Chelsea, ensuring that the Blues' top spot in their group was secured. On December 5, they welcomed
bitter rivals Leeds United to Stamford Bridge, in Chelsea's first home game with 2,000 fans in attendance. Leeds took a shock lead just five minutes through
Patrick Bamford, but the Blues managed to equalise with an Olivier Giroud goal and defeated their rivals 3–1 to go top of the Premier League, with Kurt Zouma and Christian Pulisic also adding to the goals. Chelsea played out a 1–1 home draw three days later against Krasnodar, in their final group stage game of the Champions League. Next, Chelsea travelled to
Goodison Park to play
Everton on 12 December. The match ended in a 1–0 loss for Chelsea, their first away defeat of the season, putting an end to their 17-game unbeaten run and losing ground in the title race, with Tottenham and Liverpool both ahead of Chelsea, and with a game in hand. Chelsea then followed this up by losing again away to
Wolverhampton Wanderers, with a 95th-minute winner from
Pedro Neto sealing a 2–1 win for Wolves. Chelsea returned to winning ways in a 3–0 home victory against
West Ham United, with a header from Thiago Silva and a
brace from Tammy Abraham sealing an emphatic victory. On 26 December, Chelsea travelled to
North London to play out-of-form
Arsenal at the
Emirates Stadium; Arsenal were in 15th place and were winless in the last seven matches entering this game. The Gunners took a shock 2–0 lead at half-time, courtesy of an
Alexandre Lacazette penalty and a
Granit Xhaka free kick, before
Bukayo Saka added to Arsenal's shock lead in the 56th minute. Tammy Abraham scored a consolation goal in the 85th minute, and Jorginho had a penalty saved in added time by
Bernd Leno, to ensure no comeback was to happen for the Blues, in a humiliating 3–1 defeat. Chelsea closed out 2020 with a 1–1 home draw against
Aston Villa, with Olivier Giroud and
Anwar El Ghazi scoring the only goals of the game.
January Chelsea's first match of 2021 was at home against
Manchester City on 3 January. Chelsea struggled greatly throughout the game and were 3–0 down inside 34 minutes, with the goals coming from
İlkay Gündoğan,
Phil Foden, and former Chelsea man
Kevin De Bruyne. Callum Hudson-Odoi scored a consolation goal in the 92nd minute, as the Blues suffered another embarrassing 3–1 defeat. The next week, Chelsea begun their quest for the
FA Cup after
coming up short the previous year, starting off their journey with a comfortable 4–0 home victory against
League Two side
Morecambe in the third round, with Mason Mount, Timo Werner, Callum Hudson-Odoi, and Kai Havertz finding the net for Chelsea. Chelsea then made a trip to
Craven Cottage to take on
West London rivals Fulham. The game saw Fulham fullback
Antonee Robinson being shown a red card after a dangerous challenge on
César Azpilicueta. Mason Mount managed to score the only goal of the match in the 78th minute, as Chelsea earned a hard-fought 1–0 win against their rivals. Chelsea's next match was away at high-flying
Leicester City, who at this point were second in the league. Chelsea went on to lose this match 2–0, with first-half goals from
Wilfred Ndidi and
James Maddison piling more misery on the Blues' bad run of form. Frank Lampard's final game took place on 24 January, as Chelsea defeated
Luton Town 3–1 in the FA Cup. However, this wasn't enough to save Lampard's job, as the very next day, Chelsea announced the sacking of Lampard after their poor run of form that included only two wins from their past eight league matches. The following day, it was announced that former
Borussia Dortmund and
Paris Saint-Germain manager
Thomas Tuchel would be replacing Lampard as the manager of Chelsea. Tuchel's first match in charge took place two days later, with Chelsea taking on
Wolverhampton Wanderers at Stamford Bridge. The match ended in a frustrating 0–0 stalemate, with Chelsea having 79% possession of the ball but were unable to find the net. Tuchel stated after the match that "we will build a team nobody wants to play against". Chelsea's final match of the month was against
Burnley at home, which saw Tuchel claim his first win as Chelsea manager, as goals from César Azpilicueta and
Marcos Alonso sealed a 2–0 victory for the Blues. Alonso's strike against the Clarets earned him a nomination for the Premier League Goal of the Month award, eventually won by
Liverpool's
Mohamed Salah.
February Chelsea opened February with three consecutive away victories at
Tottenham Hotspur and
Sheffield United in the league, and
Barnsley in the FA Cup. On 15 February, Chelsea welcomed
Newcastle United to Stamford Bridge, with Chelsea winning 2–0 to claim their fifth victory in a row in all competitions, as Timo Werner ended his 14-game goal drought in the Premier League, dating back to November. Chelsea then took the trip to
St Mary's Stadium to take on
Southampton on 20 February, who had lost their last six Premier League matches in a row, including a
9–0 defeat at
Manchester United. The Blues could only manage a 1–1 draw, with
Takumi Minamino opening the scoring in the first half before Mason Mount equalised with a penalty in the second half. Three days later, Chelsea travelled to Spain to play
Atlético Madrid in the first leg of their Champions League
round of 16 tie. Chelsea won the match 1–0, with an Olivier Giroud bicycle kick sealing the first leg win and a crucial away goal for Chelsea. Chelsea returned to Premier League action on 28 February, playing out a dull goalless stalemate against
Manchester United at Stamford Bridge. Chelsea's league performances under Thomas Tuchel in February earned the German a nomination for the Premier League Manager of the Month award, which was won by
Manchester City's
Pep Guardiola.
March Chelsea's first match of the month saw them take on
Liverpool at
Anfield, who had lost their last four home games after going on a 68-game home unbeaten run between April 2017 and January 2021, the second-longest in league history, with the record belonging to Chelsea themselves after going unbeaten at home for 86 games between March 2004 and October 2008. Chelsea defeated the Reds 1–0, with a superb Mason Mount strike in the 42nd minute condemning Liverpool to their fifth home loss in a row, and Tuchel extending his unbeaten run to 10 games. Next, Chelsea defeated
Everton 2–0, with an own goal form
Ben Godfrey and a Jorginho penalty sealing the victory for the Blues. The Blues then travelled to
Elland Road to play bitter rivals
Leeds United on 13 March, which ended in a 0–0 draw. Chelsea then played the second leg of their Champions League round of 16 tie against
Atlético Madrid, this time at home, with the Blues heading into the game with a 1–0 advantage and an away goal. Chelsea earned a 2–0 victory, with goals from Hakim Ziyech and
Emerson Palmieri ensuring Chelsea's progression to the quarter finals of the Champions League, the first time they had done so since the
2013–14 season. The victory also meant that Tuchel became the first Chelsea manager to go unbeaten in his first 13 matches in charge of the club, surpassing the previous record of 12 held by
Luiz Felipe Scolari. Chelsea followed this up by defeating
Sheffield United in the quarter finals of the FA Cup, sending the Blues through to the semi-finals. Chelsea then went on a brief hiatus for the March international break. Chelsea were nominated for all three Premier League awards in March, with Andreas Christensen's defensive performances earning him a nomination for the Premier League Player of the Month award, and Mason Mount's goal against Liverpool also being nominated for Premier League Goal of the Month. Thomas Tuchel was nominated for the Premier League Manager of the Month award for the second consecutive month, this time being honoured with the award.
April Chelsea's first match after the international break saw them welcome relegation-fighting
West Bromwich Albion to Stamford Bridge. Christian Pulisic gave Chelsea the lead 27 minutes in but just two minutes later, Thiago Silva was sent off after receiving a second yellow card. The Blues found themselves 2–1 down at half-time via a stoppage-time brace from
Matheus Pereira. Goals from
Callum Robinson and
Mbaye Diagne gave the Baggies a shocking 4–1 lead. Mason Mount managed to pull one back for Chelsea, but another goal from Callum Robinson in added time capped off an embarrassing 2–5 defeat for Chelsea, ending Thomas Tuchel's 14-game unbeaten streak as manager. It was the first time Chelsea had conceded 5 goals at home since a 3–5 defeat against
Arsenal in
2011, and was also the first time they had lost to West Bromwich Albion at Stamford Bridge since 1978. Chelsea bounced back from the humiliation in their next game, which was the first leg of their Champions League quarter final tie against
Porto away, which saw a fine Mason Mount strike and a late Ben Chilwell goal give Chelsea a 2–0 victory with two crucial away goals. Chelsea then travelled to
South London to take on
Crystal Palace away on 10 April. Goals from Kai Havertz, Kurt Zouma and a brace from Christian Pulisic saw Chelsea run out 4–1 winners, the first time they had scored more than two goals under Tuchel. The Blues then played Porto in the second leg of the Champions League quarter finals, heading into the game with a 2–0 advantage and two away goals. Chelsea were defeated 1–0 thanks to a late
Mehdi Taremi overhead kick, but did enough to make it through to the Champions League semi-finals, winning 2–1 on aggregate. Four days later, Chelsea defeated
Manchester City in the FA Cup semi-finals, with Hakim Ziyech scoring the winner to help Chelsea advance to the
FA Cup Final for the second consecutive year. On 18 April, it was announced that Chelsea would be a founding member of the newly formed
European Super League, a proposed annual club football competition to be contested by twenty of Europe's most elite football clubs. On 20 April, after two days of widespread backlash from the United Kingdom government including Prime Minister
Boris Johnson,
FIFA,
UEFA, the
FA, other Premier League clubs, supporters, players, and broadcasters, and after Chairman
Bruce Buck met with players, Chelsea announced their intention to withdraw from the competition. This led to the five other English clubs all pulling out later that night. By 21 April, the Super League announced it was suspending its operations. On 20 April, Chelsea played out a 0–0 home draw against
Brighton & Hove Albion, losing some ground in the top four race. Four days later, the Blues defeated
West Ham United 1–0 away, with a Timo Werner goal sealing the win for Chelsea. Chelsea's final match of April was against
Real Madrid away in the first leg of the Champions League semi-finals. Chelsea took the lead through Christian Pulisic, but
Karim Benzema equalised for Real Madrid later in the first half, as the match ended in a 1–1 draw, with Chelsea entering the second leg at home a crucial away goal.
May Chelsea's first fixture of May saw them defeat West London rivals
Fulham 2–0, thanks to a brace from Kai Havertz. On 5 May, Chelsea welcomed
Real Madrid to Stamford Bridge for the second leg of their semi-final, with the score being level at 1–1 and Chelsea heading into the match with an away goal. Timo Werner gave Chelsea the lead in the 28th minute, before a late tap-in from Mason Mount booked Chelsea their place in the
Champions League Final in
Istanbul. Their win set up an all-English affair after
Manchester City had secured their maiden appearance in the final the day before, defeating
Paris Saint-Germain over two legs. Chelsea's next match in the Premier League was against their Champions League final opponents, Manchester City, at the
City of Manchester Stadium.
Raheem Sterling scored first for the Citizens 44 minutes in, with
Sergio Agüero having a penalty saved by
Édouard Mendy just before half-time. Hakim Ziyech scored the equaliser for the Blues in the 63rd minute, before a stoppage-time goal from Marcos Alonso saw Chelsea run out 2–1 winners, as Thomas Tuchel made it two consecutive victories against
Pep Guardiola. Next, Chelsea took on ninth-placed
Arsenal at home, with
Mikel Arteta's Gunners already enduring a
poor season. Chelsea were shockingly defeated 1–0, with a poor back pass from Jorginho allowing
Emile Smith Rowe to score the winner for Arsenal, with Christian Pulisic also having a goal disallowed by
VAR due to a handball. This was the first time had Chelsea had lost to Arsenal at home in nearly a decade, since a 3–5 defeat in October 2011. On 15 May, Chelsea faced
Leicester City in the
FA Cup Final, which was Chelsea's first chance of winning silverware this season. It was a frustrating game for Tuchel's Blues, as they were denied by
Kasper Schmeichel multiple times throughout the game, with a
Youri Tielemans stunner in the 63rd minute putting Leicester 1–0 up. Chelsea thought they had found their equaliser through Ben Chilwell in the 88th minute, but was ruled out by VAR for offside, as the Foxes won their first ever FA Cup and Chelsea had lost the FA Cup Final for the second straight year. Chelsea had an immediate rematch against Leicester City three days later in the Premier League, with goals from
Antonio Rüdiger and Jorginho giving Chelsea a 2–1 victory and strengthening their top four hopes, while leaving Leicester's Champions League hopes in danger. Chelsea's final Premier League match of the season saw them travel to
Birmingham to face
Aston Villa, on 23 May. Chelsea would go on to lose 2–1, but still finished fourth and secured their place in
next season's Champions League, as elsewhere, Leicester City lost to
Tottenham Hotspur. On 29 May, Chelsea faced
Manchester City in the
Champions League Final. It was the third time in Chelsea's 116-year history that they had competed in the
Champions League final, losing against
Manchester United in
2008 and defeating
Bayern Munich in
2012. Chelsea went into the match as the underdogs, similarly to 2012, and defeated Manchester City 1–0 to win the Champions League, with Kai Havertz's goal in the first-half goal sealing Chelsea's second Champions League title. Chelsea became the third English club to win the Champions League multiple times, after
Liverpool (
2005,
2019) and Manchester United (
1999,
2008).
Final league position ==Management team==