Quarterback will also be the focus for the Alouettes as Montreal looks to rebound from a dismal 6-12 mark. The club has a number of capable QBs on the roster, including veteran Kevin Glenn. Montreal signed Vernon Adams, a former star at the University of Oregon, to a three-year contract after acquiring his rights from the Lions last week. The Alouettes still have Rakeem Cato, who started four of the club's six wins in 2015, as well as Jonathan Crompton, last year's Week 1 starter.

Ottawa Redblacks

The Redblacks shocked the CFL by making it all the way to the Grey Cup in just their second year of existence. Ottawa went from 2-16 in 2014 to 12-6 in 2015 thanks in large part to the resurgence of Henry Burris. The veteran quarterback was named the CFL's most outstanding player after leading the league in passing yardage with a stellar group of receivers. Will he be able to keep it going? The Redblacks signed former Argos pivot Trevor Harris for insurance now and to be the club's quarterback of the future.

Saskatchewan Roughriders

The Riders finished a CFL-worst 3-15 in a 2015 season that seemed lost as soon quarterback Darian Durant went down in Week 1 with a ruptured Achilles tendon. Durant is back healthy for a club that lured Chris Jones away from Edmonton to put his stamp on the franchise as its head coach, general manager and vice-president of football operations. Another intriguing storyline will be whether or not Saskatchewan comes to terms with former University of Oklahoma offensive lineman Josiah St. John, the first overall pick in the CFL draft.

Toronto Argonauts

The Argonauts are hopeful that quarterback Ricky Ray's shoulder issues are behind him after he missed the first half of last season's 10-8 campaign. Toronto upgraded its offensive line by signing Canadian tackle Josh Bourke from Montreal, but there will be a different look in the receiving corps and return game after Chad Owens left for Hamilton. The biggest news this season is the club's move out of Rogers Centre to BMO Field. The Argonauts play their first pre-season game in their new digs on June 11.

Winnipeg Blue Bombers

Fans in Winnipeg were bitterly disappointed after the club stumbled to a 5-13 mark in 2015, missing the playoffs in a year when the city hosted the Grey Cup. The Bombers made a splash in the off-season by signing Winnipeg native Andrew Harris from B.C. to lead the team's running attack. Winnipeg also added former Saskatchewan slotback Weston Dressler in free agency. But like all teams, quarterback health will be paramount to the Bombers' success as Drew Willy returns from a broken leg and knee injury that cut last season short.

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By Joshua Clipperton, The Canadian Press