Having trained at the
Heriot-Watt Squash Academy and the East of Scotland Institute of Sport, Leitch became Scotland's number one junior in 2002. He made his debut for the Scottish senior team in 2003 and has since made over 60 international appearances. where he, and partner
John White, were knocked out (8-10 9-2 9-2 3-9 9-6) in the quarterfinals by the eventual champions
Lee Beachill and
Peter Nicol. In 2010, Leitch appeared for the
Scottish team again at the
2010 Commonwealth Games, playing alongside
Alan Clyne in the
men's doubles, and
Lisa Aitken in the Mixed Doubles. He and Clyne finished 4th after losing 2–0 to the Australian team in the bronze medal match. In September 2013 Leitch was one of the first 27 athletes to be selected as part of Team Scotland for the
2014 Commonwealth Games in Glasgow. Leitch and Clyne again reached the semi-finals in
men's doubles but ultimately finished 4th, losing to
James Willstrop and
Daryl Selby of England in the bronze medal match. In addition, he won a record ten
Blues representing the
University of Cambridge on the squash court. This led to the introduction of the 'Leitch Law' in 2014, which limits the number of varsity appearances to 8 in total, essentially extending the
'Rankov Rule' from rowing to encompass all Varsity matches. == Academic career ==