Redblacks 33, Roughriders 32: Ryan Lindley rushed for a 1-yard touchdown with four seconds remaining in the fourth quarter as visiting Ottawa scored 13 points in the final 2:31 to stun Saskatchewan.

Trevor Harris went 17-of-33 for 262 yards and threw touchdown passes to Diontae Spencer and Greg Ellingson for the Redblacks (7-9-1), who took sole possession of first place in the East Division. Antoine Pruneau returned an interception for his first career touchdown and Dominique Rhymes had three receptions for 85 yards as Ottawa clinched a playoff spot.

Kevin Glenn finished 29-of-39 for 387 yards with touchdown passes to Caleb Holley and Kienan LaFrance for the Roughriders (8-7), who failed to record a third straight victory. Duron Carter hauled in 11 passes for a career-high 231 yards for Saskatchewan, which had won its previous five games against East Division foes.

Tyler Crapigna connected on kicks from 33, 21 and 34 yards to put the Roughriders in front 9-3. LaFrance caught a 6-yard touchdown pass to increase Saskatchewan's lead to 16-3 before Harris threw a 12-yard scoring strike to Spencer with 36 seconds left in the second quarter to pull Ottawa within six at halftime.

Brett Maher converted a 48-yard field-goal attempt and Pruneau ran an interception back 46 yards for a TD to put the Redblacks on top 20-19, but their lead was short lived as Holley made an 11-yard touchdown catch to help Saskatchewan pull ahead 29-20. Crapigna kicked his sixth field goal to put the Roughriders seemingly in the clear at 32-20 before Harris found Ellingson for a 11-yard touchdown and Lindley scored on the quarterback sneak to complete the comeback.

GAME NOTEBOOK: Ottawa WR Brad Sinopoli, who leads the CFL with 91 receptions, was a late scratch due to a shoulder injury. … Saskatchewan WR Naaman Roosevelt caught three passes for 29 yards before leaving the game in the fourth quarter with a head injury. … Roughriders RB Trent Richardson gained for 60 yards on 14 carries. … The Redblacks have had 11 games decided by five points or less this season.