Acquired: Signed as a free agent on April 3, 2014.
2015: In 18 games (six starts), Jefferson recorded 24 defensive tackles, six sacks, three forced fumbles and four knockdowns.
Jefferson started at defensive end in the West Final against Calgary, recording one tackle.
2014: In 17 games (10 starts), Jefferson recorded 19 defensive tackles, four sacks, six pass knockdowns, one fumble recovery and one blocked punt. He recorded his first CFL sack in Week 3 against the Ottawa REDBLACKS. In the Labour Day Classic, Jefferson blocked a Rob Maver punt, recovered by teammate LB Otha Foster who ran it back for a 57-yard touchdown. Jefferson started at defensive end in the West Semi-Final against Saskatchewan and the West Final against Calgary.
Pro: In 2013, Jefferson spent time with the Houston Texans, appearing in six games.
College: Jefferson earned All-Southland Conference first-team honours as a senior at Stephen F. Austin. He recorded 36 tackles, a team-high eight sacks and five forced fumbles in 11 games.