Mark Leech played on numerous occasions for the students' Under 21 panel and broke into the UCD first team making limited appearances.
13 Facts About Mark Leech
Mark Leech scored his only UCD goal against Waterford United at Belfield Park on 22 September 2003 aged just 17.
Mark Leech departed UCD during the 2004 season before he was due to begin his scholarship to sign for Drogheda United in July 2004, the club of his former boss at UCD Paul Doolin.
Mark Leech fought his way into the Drogheda United first team with numerous impressive displays for their Under 21 side.
Mark Leech further excelled his ever growing profile by scoring an extra-time winner for Drogheda United in the 2006 Setanta Sports Cup Final against Cork City at Tolka Park on 22 April 2006.
Mark Leech was shortly loaned to Bohemians in July 2006 until the end of the season as part of Tony Grant's permanent move in the opposite direction.
Mark Leech was a regular figure for Shelbourne during the 2007 season making 32 league and cup appearances and scoring 12 goals making him Shelbourne's top goalscorer for the 2007 season.
Mark Leech's loan spell at Shelbourne ended at the end of the 2007 season.
Mark Leech signed for Galway United in December 2007 but his spell at Terryland Park only lasted 6 months.
Mark Leech signed for Shamrock Rovers on 3 July 2008; he made his Hoops debut the following day as a substitute against Cobh Ramblers.
Mark Leech released by Shamrock Rovers at the end of the 2008 season but he was later signed by St Patrick's Athletic before the start of the 2009 season.
Mark Leech made an impressive start to his Pats career scoring twice in his first four games before suffering a broken leg against Dundalk on 27 March 2009.
Mark Leech parted company with St Patrick's Athletic at the end of 2009 and he re-joined former club Shelbourne on 25 March 2010.