San Diego Chargers On April 27, 2013, Tasker signed with the
San Diego Chargers as an undrafted
free agent. However, Tasker did not make the team and was cut on August 30.
Hamilton Tiger-Cats Tasker signed to the practice roster with the
Hamilton Tiger-Cats of the
Canadian Football League (CFL) on September 17, 2013. Tasker was reunited with
Kent Austin (the head coach of the Tiger-Cats), who had been his head coach at Cornell University. He was moved to the active roster and made his CFL debut on September 28, 2013 against the
Calgary Stampeders. He caught his first career touchdown in a 33–19 win over the
Toronto Argonauts on October 4, 2013. Tasker only appeared in 5 games for the Ti-Cats during his rookie season, finishing the year with 202 receiving yards on 13 catches with 1 touchdown. His second season in the CFL, the
2014 CFL season, was a breakout year for Luke Tasker. He led the team in receptions (72), receiving yards (937) and was tied for the lead in receiving touchdowns (5) along with
Brandon Banks. Tasker was recognized for his successful season when he was named a CFL East All-Star for the 2014 season. Following the 2014 season Tasker passed up on an offer from the
Green Bay Packers of the
NFL and the agreed to a contract extension with the Ti-Cats. Tasker continued his exceptional play in the next three seasons, highlighted by his
2017 campaign in which he set career highs in receptions (104) yards (1,167) and touchdowns (7). One day before the start of free agency the Ti-Cats and Tasker agreed to a two-year contract extension on February 12, 2018. Tasker ended the 2018 as one of the few healthy Hamilton receivers;
Brandon Banks,
Terrence Toliver,
Chris Williams, and
Jalen Saunders all finished the year with season ending injuries. Tasker however amassed 1104 yards and a career high 11 touchdowns on 78 catches, and was named to the 2018 CFL All-Star Team. Tasker missed about half the season in 2019 with a broken finger and a hamstring injury, limiting him to only 406 receiving yards on 36 receptions. Tasker was not re-signed by the Ti-Cats following the
2019 season and became a free agent on February 11, 2020. ==Personal life==