|Country (sports)||Zambia but only represented Great Britain|
|Born||23 September 1974|
|Height||5 ft 11 in (180 cm)|
|Plays||Right-handed (1-handed backhand)|
|Highest ranking||No. 172 (14 August 1995)|
|Grand Slam Singles results|
|Wimbledon||2R (1993, 1995)|
|Highest ranking||No. 200 (3 October 1994)|
|Grand Slam Doubles results|
|Coachee Singles Titles total||13|
|Coachee(s) Doubles Titles total||2|
|List of notable tournaments|
He left Zimbabwe in 1988 to pursue tennis in the United Kingdom. He reached a highest ranking of 172 in singles and 200 in doubles. He played in three Davis Cup ties for Great Britain, making his debut against Slovakia in 1995 and coming out of retirement to partner Tim Henman to victory against Thailand at the Birmingham NIA in 2002. At Wimbledon in 1999, Maclagan managed to take a two set to love lead against Boris Becker, and had three match points on Becker's serve in the fourth set, before eventually losing in five sets.
As a coach he worked with doubles specialists such as Wayne Black and Kevin Ulyett and was part of their team as they went on to win the Australian Open Doubles title in 2005. He subsequently continued to coach the pairing of Kevin Ullyett and Paul Hanley after Wayne Black retired. At the end of 2007 he was invited to join up with fellow Scot and British No. 1 Andy Murray as part of his coaching team.
On 27 July 2010, Andy Murray and Maclagan split. But he was not out of employment for long as on 17 September he was hired by German player Philipp Kohlschreiber. Between June 2011 to July 2012, he coached former World No.8 Cypriot Marcos Baghdatis.
In June 2013, it was announced that Maclagan would start coaching Laura Robson. However this partnership ended in October 2013 and Sam Stosur chose Maclagan to replace David Taylor as her coach. Stosur ended her coaching relationship with Maclagan in June 2014, ten days before the 2014 Wimbledon. Maclagan began coaching Borna ?ori? in December 2015.