4 storylines to watch in Week 21

We've made it CFL fans. It's the final week of the regular season.

It's come down to Week 21, but after this weekend's games, we'll finally know the matchups for the Division Semi-Finals on October 31.

To get you set for the final slate of regular season games in 2026, here's a storyline to watch in each matchup.

WILL TORONTO FINISH THE REGULAR SEASON 5-1 AT HOME?

MONTREAL AT TORONTO FRIDAY, OCTOBER 23 7:00 P.M. ET TSN, RDS2, CFL+

The Toronto Argonauts have made BMO Field a difficult place for opponents to play this season, winning four of their five games at home so far.

After starting their season on the road, Toronto returned to BMO Field and won four straight games at home before dropping their first against the BC Lions in Week 18.

Keeping the momentum of another home victory will be important for the Argos, as this weekend's contest isn't their last game in Toronto. They're hosting the Eastern Semi-Final on October 31 in the first round of postseason action in the CFL.

Can Toronto keep their fans happy with one final regular season win?

A WIN AND THEY'RE IN

WINNIPEG AT BC FRIDAY, OCTOBER 23 10:00 P.M. ET TSN, CFL+

All the Winnipeg Blue Bombers have to do is win and they'll punch their ticket to the postseason. Winnipeg has won their last three meetings in BC and will hope to continue that trend this weekend.

If they win at BC Place on Friday night, Winnipeg will still have to wait until Saturday night to find out if they are playing in the Western Semi-Final or if they will crossover into the East Division to play in the Eastern Semi-Final. A Winnipeg win and a Riders win means the Bombers will be the crossover team. A Bombers win and a Riders loss and Winnipeg will head back to Vancouver to play in the Western Semi-Final against the Lions.

As mentioned, the Leos already know their playoff fate and will host the Semi-Final on October 31. As such, Nathan Rourke will get a week of rest and instead, Kaidon Salter will start at quarterback. Salter played in last week's game against the Stamps, completing six of 14 passes for 113 yards and an interception.

WILL THEY DO IT AGAIN?

OTTAWA AT HAMILTON SATURDAY, OCTOBER 24 3:00 P.M. ET TSN, CFL+

It took until Week 20, but the Ottawa REDBLACKS got their first win of the season last week. Rookie quarterback Bryson Barnes played hero, throwing the game-winning touchdown pass to Ayden Eberhardt with nine seconds left on the clock. He finished his night with 339 yards and two touchdowns through the air and added another 62 yards on the ground.

With the metaphorical monkey off their backs, the REDBLACKS are sure to be hunting for a win to end their season on a high note.

Hamilton, which, like Ottawa, has been eliminated from postseason contention, will also want to end their season with something to celebrate at Hamilton Stadium. Can they get one final victory of 2026?

WHERE WILL THE RIDERS LAND IN THE PLAYOFFS?

EDMONTON AT SASKATCHEWAN SATURDAY, OCTOBER 24 3:00 P.M. ET TSN, RDS2, CFL+

Saskatchewan knows they're in the playoffs. They just don't know who they're playing against. Whether they stay in the West or cross over into the East will be determined by the final whistle of this one. CFL.ca's Pat Steinberg broke down each scenario heading into Week 21, so check his piece out here.

Trevor Harris orchestrated a game-winning touchdown drive in the late stages of their Week 20 contest against the Als, showing off his legs and arm in the process. With under 40 seconds on the clock, Harris took off for a 22-yard run before he found KeeSean Johnson for the go-ahead score. Taking the momentum from last week, Harris and his Riders will hope they can get a win against the Elks this weekend.

Edmonton will be hosting the Western Final on November 7 and some starters may not play in this game as they look ahead to their playoff matchup. Even still, Edmonton will want to finish their regular season schedule on a positive note before heading on a round one bye.