Johnson was 6 of 8 from the field and added a team-high six rebounds for the Bulldogs (7-9, 1-2 Mountain West), who now have held 14 of their 16 opponents to fewer than 70 points.
Riley Grabau and Larry Nance Jr. led the Cowboys (14-2, 1-2) with 10 points apiece. The defeat, Wyoming's second in three games after a 13-0 start had them on the cusp of a Top 25 ranking, lacked the drama of the Cowboys' 63-61 loss to Boise State on a buzzer-beating 3-pointer.
Wyoming led 12-7 before a 10-0 run gave Fresno State the lead for good. The Bulldogs led by as many as 20 in the second half, and the Cowboys made just 12 field goals in the game.
Clemson's Jaron Blossomgame says he is withdrawing from the NBA draft and returning to school for a final season.
Jeff Goodman logs all the coaching changes following the 2015-16 college basketball season.
Indiana guard James Blackmon Jr., who averaged 15.8 points in 13 games before being injured last season, has withdrawn from the NBA draft.