[1] Gray reached his first quarter-final at the 2001 Benson & Hedges Championship, but was defeated 1–5 by the eventual finalist, Hugh Abernethy.

He was successful in this, but played only four matches in the 2004/2005 season; the last of these, a 3–5 Malta Cup defeat to Darren Morgan, was Gray's final at competitive level.

After his snooker career ended, Gray began playing pool, becoming a full-time professional player in 2010.

In 2008, he was the number one nine-ball player in Britain and Europe, having won the 2007 Swiss 9-Ball Championship; Gray was also part of the Mosconi Cup-winning European team of 2008, 2014 and 2016.

Alongside Daryl Peach, Gray was the runner up at the 2008 World Cup of Pool, losing to the American team of Rodney Morris and Shane Van Boening 11–7.