Ashton Jeanty rushed for 209 yards on 32 carries to move into fourth place on the FBS single-season rushing list and No. 10 Boise State clinched a playoff spot with a 21-7 victory over No. 20 UNLV in the Mountain West title contest on Friday night in Boise, Idaho.Jeanty scored on a 75-yard run while recording his sixth 200-yard outing of the season in his final bid to impress Heisman Trophy voters. Colorado receiver/cornerback Travis Hunter is considered to be the favorite.The victory gives Boise State (12-1) automatic entry into the 12-team College Football Playoff. One spot goes to the highest-rated conference champion outside of the power 4 conferences.The Broncos were projected to receive a first-round bye into the quarterfinals in the latest unveiling on Tuesday.Boise State’s Maddux Madsen completed 18 of 27 passes for 158 yards and one touchdown. He also rushed for a score.Greg Burrell rushed for a touchdown for UNLV (10-3), which had its school-record eight-game road winning streak halted. The Rebels now await their bowl destination and will have one more chance at tying the Randall Cunningham-led 1984 team (11-2) for most wins in program history.Jeanty finished the night with 2,497 rushing yards, and passed Marcus Allen (2,342 yards in 1981 for Southern California) to become No. 4 on the list.Jeanty is now 131 yards behind all-time leader Barry Sanders (2,628 in 1988) of Oklahoma State. Bowl games didn’t count in stats when Sanders played — he had 222 in the Holiday Bowl for a 12-game total of 2,850.Jeanty also trails Wisconsin’s Melvin Gordon (2,587 in 2014) and UCF’s Kevin Smith (2,567 in 2007).