[3] His 2013 season held much promise with Cato being placed on the 2013 Players to Watch by The Touchdown Club of Columbus, and early on was already in the running of the 2013 Sammy Baugh award.

[16] He started his first game for the Alouettes on July 3 against the Calgary Stampeders after Jonathan Crompton and Dan LeFevour sustained injuries in Week 1 against the Ottawa Redblacks.

For his efforts, Cato was named player of the game, with TSN analyst and Canadian Football Hall of Fame quarterback Matt Dunigan characterizing his performance as "phenomenal.

Cato began the 2016 season as the number two quarterback on the depth chart behind veteran Kevin Glenn.

Through the first half of the season the Alouettes only won 3 games, which prompted head coach Jim Popp to declare Cato as the starting quarterback for their Week 12 matchup against the BC Lions.

[20] In his first practice as the starting QB Cato and wide receiver Duron Carter got into a heated argument.

[21] A little over a week later Cato once again got into a heated argument at practice with Carter, this time also involving wide receiver Kenny Stafford.

On December 23, 2019 it was revealed that Cato had signed with the Orlando Predators of the National Arena League.

[29] On November 6, 2022, Cato signed with the Fayetteville Mustangs of the National Arena League (NAL) for the 2023 season.

[30] On June 30, 2023, Cato signed with the Orlando Predators of the National Arena League (NAL) for his second stint with the team.

Cato was raised in Liberty City, a neighborhood in Miami, Florida, by his mother Juannese, who worked two jobs to take care of her seven children.