Barrett ran back an interception and Bell brought back a fumble for a score, two of the four mistakes forced by Colorado State (3-7, 2-4 Mountain West). Donnell Alexander ran for a career-high 139 yards, his second straight 100-yard game, and two touchdowns.
The Rams had lost seven of eight.
Tim Cornett ran for 102 yards on 20 carries for UNLV (2-9, 2-4). Cornett became the first Rebel to have eight 100-yard games in a season since Icky Woods did it in 1987. Nick Sherry was 12 of 30 passing for 139 yards, a touchdown and two interceptions.
The Rebels haven't won at Hughes Stadium since Nov. 20, 2002, and extended their road losing streak to 21 games. They failed to win back-to-back games for the first time since 2008.
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A UCLA football player was suspended indefinitely Friday after he was arrested on suspicion of rape.
The tougher tests await down the road for No. 3 Baylor Bears, but coach Art Briles has seen enough of his Bears to know this is his best team.
A decision has been made that Randy Edsall will not be the football coach at Maryland next season, and discussions are taking place about how and when to separate, a source said Thursday night.
Linebacker Myles Jack, who suffered a season-ending knee injury, said Thursday he decided to leave UCLA and enter the 2016 NFL draft because he wants to be compensated for his skills.
Florida State running back Mario Pender has been released from the hospital but could be given a medical redshirt if he cannot return to the field this season.
The University of Wisconsin agreed to a 10-year deal with Under Armour on Friday worth a total of $96 million in cash and the retail value of products received.