Grabau scores 17 as Wyoming stops No. 5 San Diego State's 20-game winning streak, 68-62

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San Diego State forward Skylar Spencer (0) goes up against the University of Wyoming Cowboys defense Tuesday, Feb. 11, 2014 at the Arena-Auditorium in Laramie, Wyo. (AP Photo/Jeremy Martin) (The Associated Press)

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San Diego State forward Dwayne Polee II (5) pulls up for a jump shot over University of Wyoming Cowboy Josh Adams Tuesday, Feb. 11, 2014 at the Arena-Auditorium in Laramie, Wyo. (AP Photo/Jeremy Martin) (The Associated Press)

LARAMIE, Wyo. – Riley Grabau scored 17 points, Larry Nance Jr. had 14 and Wyoming beat No. 5 San Diego State 68-62 on Tuesday night to end the Aztecs' 20-game winning streak.

The victory by Wyoming (15-9, 6-5 Mountain West Conference) came almost 16 years to the day after the Cowboys last beat a top-5 team at home, a 62-56 win over No. 5 Utah.

Fans stormed the court after the final buzzer, mobbing Wyoming players.

Dwayne Polee II led San Diego State with 15 points, followed by Xavier Thames with 13.

The Aztecs (21-2, 10-1) won 20 in row after losing to Arizona in their second game of the season. Their streak tied the school mark set by the 2010-11 team, which finished a school-record 34-3 after reaching the Sweet Sixteen for the first time in school history.