Served an LDS mission in the Chile Antofogasta Mission
Older brother, Parker, also played football at BYU while sister, Meredith, played soccer at Boise State
Younger sister Abby is on the women's basketball team
Brother Madison played receiver at Idaho State
Before BYU
Rated No. 1 prospect in the state of Idaho, No. 3 overall quarterback in the nation and No. 59 overall prospect by Rivals.com
Co-MVP of Elite 11 Camp and MVP of the Under Armour All-America Game
Participated in The Opening, a five-day Nike football event and was named to the 7on7 All-Tournament team after leading his squad to the championship game
5A Southern Idaho Conference Offensive Player of the Year and named All-State
Completed a school-record 268 of 393 passes for 3,885 yards and 35 touchdowns as a senior
Set a single-game school record completing 37 of 53 passes for 469 yards and six touchdowns
Academic All-Conference all of high school
Also recruited by Arkansas, Boise State, Oregon State, Stanford, Utah and Washington State
Coached by Paul Peterson
Mission
Antofagasta
,
Chile
BYU Hall of Fame
Freshman Year
2015
Notched first career touchdown on a Hail Mary with one second left to defeat Nebraska on the road
Won his first NCAA football game he started vs. Boise State on a go-ahead touchdown in the final minute of the game
Threw 17 of 28 for 309 yards and two touchdowns and recorded his first rushing touchdown vs. Boise State
Threw a career-high 30 of 47 for 244 yards, one touchdown and one interception at UCLA
Threw 365 yards (freshman QB passing record), two touchdowns and two interceptions on 35 of 53 (career highs) passing against UConn
Finished the game against ECU 24 of 33 for 332 yards (254 in the first half for a career-high) and three touchdowns
Completed 19 of 32 passes for 253 yards, one interception and two touchdowns with a long of 53 against Cincinnati
Threw three touchdowns while completing 12 of 13 passes for 237 yards by the 9:49 mark in the second quarter against Wagner
His 15th touchdown pass of the season tied the BYU freshman record for most in a season. He threw for 293 yards on 23-of-37 passing against San Jose State. He started off the game 6 of 7 on the first drive with 51 yards and a TD pass
Completed 23 of 41 passes with 244 yards and one touchdown against Mizzou. His first completion of the second half went for 11 yards, surpassing the BYU freshman passing yard record (2,316) set by Jake Heaps. With the 6-yard TD pass in the fourth quarter, Mangum surpassed another school freshman QB record for pass TDs in a season with 16
Had his fourth career game with 300 or more passing yards against Fresno State, finishing the game 24 of 37 for 336 yards and one touchdown. He surpassed Jake Heaps for most wins by a starting freshman QB (7), consecutive games with a touchdown pass (7) and most completions by a freshman QB (226)
Threw 16 of 30 for 284 passing yards and four touchdowns against Utah State, becoming the first 3,000-yard passer since Max Hall in 2009, the 13th member of the 3,000 club at BYU and the first freshman QB to reach that mark. It was his first game of four passing touchdowns and his third game with three or more this season. Mangum also set the BYU record for freshman quarterback pass attempts in a season, now totaling 390 for the season
In the Las Vegas Bowl, went 25 of 56 for 315 yards and two touchdowns with three interceptions, surpassed his previous career-high attempt total and ended the season with seven multi-touchdown games and five games with 300+ passing yards