The two connected for scores from 10, 43, and 35 yards as coach Bobby Hauck won his first game with UNLV (1-3, 1-1 Mountain West).
Clayton finished 14 of 20 with 194 yards passing, while Johnson had 138 yards on eight catches as the Rebels scored 45 straight points after trailing New Mexico (0-4, 0-2) by a touchdown in the first quarter.
Tarean Austin, New Mexico's first true freshman starting quarterback since 1988, finished 17 of 40 for 177 yards with a touchdown and two interceptions.
What did we learn from the Big 12 conference sessions this week? Jake Trotter sorts it out in this edition of the mailbag.
UCLA's Josh Rosen will look to redeem himself against USC in 2016, making the matchup one of the upcoming season's most compelling games.
Haden's aim of reclaiming lost glory ended thanks to coaching flameouts. But his final grade remains incomplete until we see more from Clay Helton.
ESPN's Travis Haney joins The Paul Finebaum Show to analyze where the SEC coaches stand after Signing Day.
Butch Davis thinks Alabama was very smart to schedule USC for their first game next season.
Kevin Sumlin's "Swagcopter" became a symbol of Texas A&M's influence on the recruiting trail. But there are signs that the Aggies are losing momentum.