D.J. Gay scored 15 points and keyed a 21-3 run in the first half that carried No. 6 San Diego State to an 85-53 win over Utah on Tuesday night.

Billy White scored 15 points while sophomore forward Kawhi Leonard had 12 points and 14 rebounds for his 17th double-double of the season and 34th of his career. The Aztecs (24-1, 9-1 Mountain West) won their fourth straight game since their only loss, 71-58 at BYU on Jan. 26. Freshman reserve guard Jamaal Franklin scored a career-best l3 and Brian Carlwell added 10.

Will Clyburn, the second-leading scorer in the conference at 18.3 points per game, had 18 for Utah (10-14, 3-7).

Gay, a senior guard, played in his 128th consecutive game, the most in school history. He came up big in the 21-3 run, which spanned 4 minutes and helped SDSU go from a 7-6 lead to a 28-9 advantage with 11:32 left before halftime.

Gay had a steal and a layup, and another steal and a pass to Carlwell for a fastbreak layup. Gay made a pretty left-handed reverse layup, and then, with the student section — "The Show" — chanting "Show no mercy," hit a 3-point shot. Carlwell had six points during the run, nearly twice his average.

San Diego State made 9 of 11 shots during the run.

Utah's only points during that span came on a layup by Clyburn and a free throw by Josh Watkins.

SDSU guard Chase Tapley missed the game after spraining his left ankle in a 60-53 win over TCU on Saturday night. Reserve forward Tim Shelton also sat out with an injured right foot.

The Aztecs outrebounded Utah 50-36, with Franklin and Malcolm Thomas each getting 10.