After attending Saint Francis High School, Collis accepted a scholarship to play football at the University of Nevada in 2007. At Nevada, Collis was an Academic All-WAC honoree in 2009. After redshirting his freshman year, and playing behind Colin Kaepernick as a redshirt freshman and sophomore, Collis announced that he would transfer to Occidental College on January 7, 2010. Collis became a two-year starter and captain for the Occidental Tigers, and was named 2nd Team All-Southern California Intercollegiate Athletic Conference as a junior, and 1st Team All-SCIAC as a senior. As a senior, Collis ranked 3rd nationally in passing completions per game, 7th nationally in passing yards per game, and 5th nationally total passing touchdowns.
Professional career
Spokane Shock
After going undrafted in the 2012 NFL Draft, Collis was assigned to the Spokane Shock of the Arena Football League. Collis finished the season with no passes thrown, but achieved 3 tackles.
Chicago Rush
Collis joined the Chicago Rush during the 2013 season, but saw very limited playing time.
Knoxville NightHawks
During 2013, Collis signed with the Knoxville NightHawks of the Professional Indoor Football League. Although Collis served as the backup for most of the season, he won the starting quarterback position by the end of the year.
Collis signed with the San Angelo Bandits of the Lone Star Football League for 2014. He became the starter for the Bandits during Week 3 of the regular season. Collis dominated, throwing 88 touchdowns and just 7 interceptions in 11 games, and was eventually named the leagueplayer of the year. Over one three game stretch, San Angelo scored 273 points, including one game where Collis threw 12 touchdown passes and the Bandits scored a league record 107 points. The Bandits went on to win the LSFL Championship.
Collis was selected by the Beijing Lions in the 20th round of the 2016 CAFL Draft, joining his Soul head coachClint Dolezel in Beijing. Collis was the starting quarterback for the Lions during the 2016 season and helped Beijing finish the season undefeated and win the first China Bowl. Collis completed 65.9% of his passes for 1,381 yards, 29 touchdowns and three interceptions, earning All-Pro North Division All-Star honors. He was listed on the Lions' roster for the 2018 season.
