After redshirting for his freshman year at Memphis in 2012, Lynch was named the Tigers' starting quarterback prior to the 2013 season. He started all 12 games, completing 203 of 349 passes for 2,056 yards, nine touchdowns and 10 interceptions. As a sophomore in 2014, Lynch started all 13 games. He completed 259 of 413 attempts for 3,031 yards, 22 touchdowns, and nine interceptions. He also rushed for 321 yards and 13 touchdowns. Lynch was named the MVP of the 2014 Miami Beach Bowl after passing for 306 yards with four passing touchdowns and three rushing touchdowns. As a junior in 2015, Lynch again started all 13 games. He completed 296 of 443 passes (66. 8%) for 3,778 yards, 28 touchdowns (all five school records) and four interceptions. In Memphis' 63–0 victory over SMU, Lynch tied an FBS record with seven passing touchdowns in a half. He finished 9 of 14 for 222 yards, and completed his touchdown throws to seven different receivers. After the season, he decided to forgo his senior year and enter the 2016 NFL Draft. Lynch graduated from Memphis in May 2016 with a B. S. E. in sport and leisure management.