BYU (7-4) led 49-0 of at halftime after gaining 440 total yards, the fourth most in any half in program history. McChesney's 228 rushing yards are the most by a BYU freshman and the sixth most in school history.
Wilson was 17 of 20, with TD passes to Tyler Allgeier, Katoa, Guner Romney and Talon Shumway, who had four catches for 92 yards. Tight end Matt Bushman had two catches for 36 yards, including the 112th catch of his career.
West was 15-of-21 passing for 131 yards for UMass (1-11), with TD passes to Zak Simon and Josiah Johnson. Bilal Ally, 127 yards on 26 carries, scored on a 46-yard run and Cooper Garcia kicked a 29-yard field goal.
College football today - Week 7 updates, highlights, biggest moments and more
Here are the best moments on and off the field from college football's Week 7.
Louisville surprises Lamar Jackson by retiring his number
Louisville football pulls out all the stops while telling Lamar Jackson the Cardinals are retiring his No. 8.
Corso's Pick: Kentucky vs. Georgia
Lee Corso makes his headgear pick in the SEC matchup between No. 11 Kentucky and No. 1 Georgia.
J.J. Weaver embraces being unique and is inspiring others
Often hiding his extra finger as a kid, Kentucky linebacker J.J. Weaver is now embracing what makes him unique, and he is inspiring children just like him.
Louisville Cardinals to retire No. 8 jersey of former football player Lamar Jackson
Former Heisman Trophy winner Lamar Jackson will join Johnny Unitas as the only football players in school history to have their numbers retired when Louisville celebrates his No. 8 on Nov. 13.
Tebow's advice for Alabama to bounce back
Tim Tebow details what Bryce Young and Alabama need to do in order to bounce back vs. Mississippi State after the loss to Texas A&M.