Born in Sutton Coldfield, England, Gregor Rioch started his football career as an apprentice at Luton Town, During this time he joined Barneton loan where he made his league debut at the age of 18 in a 4–2 defeat to Leyton Orient. He moved to Peterborough United in 1995, before joining Hull City a year later and becoming the club captain at the age of 22. After three years with the Tigers he joined Macclesfield Town, under the management of Sammy McIlroy and Gil Prescott. Rioch left the Silkmen on transfer deadline dayin 2001 and joined Kevin Ratcliffe at Shrewsbury Town. He spent 18 months at the Salop and was a key player during the 2001–02 season that just missed out on a play-off place on the last game of the season. Rioch joined Northwich Victoria in 2002–03, before returning to Shrewsbury Town a year later for second spell under a new management regime of Jimmy Quinn and Dave Cooke who were previously in charge at Northwich Victoria. Rioch played 19 games for Shrewsbury Town that got promotion from the Conference back into the Football League via the play-offs. Rioch returned to Northwich Victoria for a second spell in March 2003, this time on loan. He took the final game of the season as a caretaker manager following the sacking of Shaun Teale. Rioch finished an 11-year playing career with a short spell with Leigh RMI before going into management abroad. Scotland selected Rioch for one of their youth sides, but he was ineligible to play for the national team because neither Greg nor his parents were born in Scotland, even though his father had captained Scotland.
Coaching career
On leaving Leigh, he was appointed manager of Danish club Køge BK. He spent two years as the youngest manager in Denmark at the age of 29 before returning to England in 2006 to coach Manchester City's under-17s, then their reserves. After only a year, he left to become the academy manager of Coventry City in 2007 and has gone on to develop a number of talented players for the club's first team.. On 10 December 2013 it was announced that Gregor has joined Wigan Athletic as the club's new Academy Manager, and will be responsible for the club's young players between the ages of 9 to 21 years of age.