Los Angeles Lakers (2014–2018) in 2015. On June 26, 2014, Clarkson was selected with the 46th overall pick in the
2014 NBA draft by the
Washington Wizards. He was later traded to the
Los Angeles Lakers on draft night for cash considerations, and joined the team for the
2014 NBA Summer League. On August 25, 2014, he signed with the Lakers. During his rookie season, he received multiple assignments to the
Los Angeles D-Fenders of the
NBA Development League, and did not play for the Lakers for most of the first half of the season. However, he ended up starting 38 games for the Lakers, primarily at
point guard, and averaged 15.8 points, 5.0 assists, and 4.2 rebounds as a starter. On March 24, 2015, he had a season-best game with 30 points and 7 assists in a loss to the
Oklahoma City Thunder. Starting alongside
Jeremy Lin, the pair became the first Asian-American starting backcourt in league history. On March 30 and April 1, Clarkson recorded back-to-back double-doubles. For the season, he was named to the
NBA All-Rookie First Team. Clarkson after joining the Lakers garnered a huge following in the Philippines owing to his Filipino heritage and the existing fanbase of the NBA team in the country. On November 3, 2015, Clarkson scored a career-high-tying 30 points in a 120–109 loss to the
Denver Nuggets. On February 12, 2016, Clarkson played for Team USA in the
Rising Stars Challenge, where he recorded 25 points, 5 rebounds, 5 assists and 4 steals in a win over Team World. On July 7, 2016, Clarkson re-signed with the Lakers on a four-year, $50 million contract. In the Lakers' season opener on October 26, 2016, Clarkson scored a team-high 25 points off the bench in a 120–114 win over the
Houston Rockets. On November 15, 2016, he recorded a career-high five steals in a 125–118 win over the
Brooklyn Nets. On March 12, 2017, he tied his career high with 30 points off the bench in a 118–116 loss to the
Philadelphia 76ers. On March 24, 2017, he had career highs of 35 points and eight 3-pointers in a 130–119 overtime win over the
Minnesota Timberwolves. On November 13, 2017, Clarkson scored a season-high 25 points in 26 minutes off the bench in a 100–93 win over the
Phoenix Suns. On January 19, 2018, he set a new season high with 33 points in a 99–86 win over the
Indiana Pacers.
Cleveland Cavaliers (2018–2019) in 2019 On February 8, 2018, Clarkson was traded, along with
Larry Nance Jr., to the
Cleveland Cavaliers in exchange for
Isaiah Thomas,
Channing Frye and a 2018 first-round draft pick. In his debut for the Cavaliers three days later, Clarkson scored 17 points in a 121–99 win over the
Boston Celtics. The Cavaliers reached the
2018 NBA Finals, where they were defeated in four games by the
Golden State Warriors. On December 12, 2018, Clarkson scored 28 points in a 113–106 win over the
New York Knicks. On February 13, 2019, Clarkson scored a career-high 42 points in a 148–139 triple-overtime loss to the
Brooklyn Nets.
Utah Jazz (2019–2025) On December 24, 2019, Clarkson was traded to the
Utah Jazz in exchange for
Dante Exum and two future second-round draft picks. On January 30, 2020, Clarkson scored a season-high 37 points in a 100–106 loss to the
Denver Nuggets. On November 21, 2020, Clarkson re-signed with the Jazz on a four-year, $52 million contract. On February 15, 2021, Clarkson scored a season-high 40 points in a 134–123 win over the
Philadelphia 76ers. He ended the
2020–21 season averaging a career-high 18.4 points per game and led the NBA with 203 three-pointers off the bench. He won the
NBA Sixth Man of the Year Award over Jazz teammate
Joe Ingles, who was the runner-up. Clarkson was the first Utah player to win the award. On October 28, 2021, Clarkson and
Jalen Green became the first two players of Filipino descent to play in the same NBA game in time for the
Houston Rockets' Filipino Heritage Night celebration. On March 12, 2022, Clarkson scored a career-high 45 points on 15-for-21 shooting from the field in a 134–125 win against the
Sacramento Kings. On December 15, 2022, Clarkson led the Jazz to a 132–129 overtime victory over the
New Orleans Pelicans with a game-leading 39 points and 8 rebounds. On January 14, 2023, Clarkson scored 38 points and grabbed 9 rebounds during a 118–117 loss to the
Philadelphia 76ers. On July 7, 2023, Clarkson signed a contract extension with the Jazz. On January 1, 2024, Clarkson recorded his first career triple-double with 20 points, 10 rebounds, and 11 assists in a 127–90 win over the
Dallas Mavericks, the first in the regular season for any Utah Jazz player since
Carlos Boozer in 2008, ending the longest-ever regular-season triple-double drought for any NBA team. On December 19, 2024, Clarkson was ejected after an altercation with
Paul Reed, almost starting an altercation with
Ron Holland, and while being ejected, he threw his headband into the crowds. On December 21, he was fined $35,000 for the altercations and headband throwing. In 37 appearances (9 starts) for the Jazz during the
2024–25 NBA season, Clarkson averaged 16.2 points, 3.2 rebounds, and 3.7 assists. On March 27, 2025, Clarkson was ruled out for the remainder of the season after undergoing a medical procedure to address
plantar fasciitis in his left foot. On June 30, 2025, Clarkson reached a buyout agreement with the Jazz.
New York Knicks (2025–present) On July 7, 2025, Clarkson signed with the
New York Knicks. ==National team career==