SAN DIEGO (AP) -- Winston Shepard scored 16 points and grabbed 11 rebounds and San Diego State beat Wyoming 67-55 Wednesday night in a Mountain West Conference opener.

Jeremy Hemsley scored 16 points, Trey Kell scored a season-high 14, and Skylar Spencer had 12 boards for the Aztecs (8-6), who outrebounded the Cowboys 50-26, scoring 14 second-chance points off of 21 offensive rebounds.

Jason McManamen's 3-pointer pulled the Cowboys within 44-40 midway through the second half. Hemsley's back-to-back 3-pointers helped the Aztecs pull away 50-40 with 9:14 to play, and Wyoming got no closer than nine the rest of the way.

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Josh Adams' jumper gave Wyoming an early lead, but it was all San Diego State after that. The Aztecs scored 10 unanswered points, then pulled away on a 15-2 run and led 35-25 at halftime.

Adams scored 16 for Wyoming (7-7), Hayden Dalton added 13, and McManamen 11.