Thomas Mason-Griffin (born September 29, 1990) is an American former basketball player. Mason-Griffin usually played as point guard. He played college basketball for the Oklahoma Sooners.
After a decorated high school career in which he was named a McDonald's All-American, Mason-Griffin signed with Oklahoma. In his only season with the Sooners, he averaged 14.1 points and 5.0 assists per game, earning third-team All-Big 12 honors. He declared for the 2010 NBA draft and apologized to Oklahoma fans "if they felt I let them downâÂÂ.
He signed with the German team ratiopharm Ulm for the 2011âÂÂ2012 season. Due to injuries, he missed the complete 2012âÂÂ13 season. Mason-Griffin wouldn't play in the 2013âÂÂ14 season as well. For the 2014âÂÂ15 season, he returned to ratiopharm Ulm, and played 10 BBL games that season.
On December 15, 2015, Mason-Griffin signed with Donar Groningen in the Netherlands. On January 11, 2016, Donar and Mason-Griffin parted ways. He played one game for Donar, in which he had 8 points and 6 assists.
On October 30, 2016, Mason-Griffin was selected by the Maine Red Claws with the 108th pick of the 2016 NBA Development League draft. He was waived on November 9, before playing a game with the Red Claws.