St Patrick's Athletic McGrath signed his first professional contract at
St Patrick's Athletic aged 21. He made his debut on 30 August 1981 in a
League of Ireland Cup clash against
Shamrock Rovers at
Richmond Park. In the game's
match programme, manager Charlie Walker stated in his notes that Although his League Cup debut ended in a 2–3 defeat, McGrath scored the winner in his next game, a
Leinster Senior Cup match against
Shelbourne. dedicated to McGrath outside
Richmond Park, home ground of his first club
St Patrick's Athletic. He ultimately excelled at
The Saints, earning the nickname "The Black Pearl of
Inchicore" and winning the
PFAI Players' Player of the Year award for 1982. His performances attracted the attention of
Billy Behan and Manchester United, who brought McGrath over for a trial in April 1982. The club's manager at the time was
Ron Atkinson, who McGrath later described as one of his "favourite men in football". McGrath joined a cohort of Irish players at United and credited Kevin Moran,
Frank Stapleton,
Ashley Grimes and
Anthony Whelan with helping him to settle in. McGrath scored his first goal for United against Luton Town on 9 May 1983 at Old Trafford. However, he missed out on a place in the team's
1983 FA Cup victory over Brighton & Hove Albion later that month. McGrath eventually ousted
Gordon McQueen to become the regular partner to
Kevin Moran in the centre of defence. The highlight of his Manchester United career came in the
1985 FA Cup final, where a 1–0 win over Everton secured the trophy and McGrath picked up the Man of the Match award. The team eventually finished fourth in the table, 12 points behind champions
Liverpool. Their poor form continued into the
1986–87 season and, after United's worst start in 14 years, Ron Atkinson was sacked and replaced by
Alex Ferguson in November 1986, but McGrath initially remained a regular member of the first team. By the
1988–89 season, McGrath was struggling with knee injuries and was becoming a less regular member of the first team, facing competition from new signings
Steve Bruce and
Mal Donaghy.
The next season saw the club fighting relegation for much of the campaign after boss
Graham Taylor left to take control of
England. In the
inaugural season of the Premier League, Aston Villa once again finished as runners-up, this time behind Manchester United. As a sign of the regard he was now held in by his fellow professionals, McGrath won the 1992–93
PFA Players' Player of the Year award. The
1995–96 season saw McGrath enter the final year of his Aston Villa contract. The campaign ended in success when McGrath won the League Cup with Villa again, this time overcoming Leeds United
3–0. McGrath was rewarded for his performances with a contract extension, which he signed in May 1996. Despite spending the previous season as a regular in a back three alongside
Gareth Southgate and
Ugo Ehiogu, McGrath found himself out of the starting lineup for the start of the
1996–97 campaign. Instead, McGrath's international teammate
Steve Staunton was preferred by manager Brian Little. Aged 36 and wishing to maximise his playing time, McGrath submitted a transfer request and an offer of £200,000 from newly promoted
Derby County was accepted by Aston Villa.
Derby County McGrath joined Derby in October 1996 and, despite being unable to train due to severe knee pain, went straight into the starting line-up against Newcastle United. By the end of the season, McGrath had helped Derby to a 12th-place finish in the Premier League. However, McGrath's injury problems had worsened as the season came to a close and Derby decided not to offer him a new contract.
Later career After his release by Derby County, McGrath dropped down a division to sign for
Sheffield United in July 1997. He made his debut for the club on 10 August 1997 against Sunderland, a 2–0 victory at Bramall Lane. He played his final game as a professional for Sheffield United against
Ipswich Town on 9 November 1997, just before his 38th birthday. After a minor operation on his knees, McGrath was back in training with the club in January 1998 but by February he was struggling to return to fitness. McGrath officially announced his retirement from football on 17 April 1998. ==International career==