The Toronto Blue Jays head to Wrigley Field on Sunday, June 21, 2026, for a 2:20 PM ET first pitch against the Chicago Cubs. Dylan Cease takes the ball for Toronto against Chicago's David Peterson in a regular-season interleague matchup that carries real weight in the standings. The Cubs are sending out a loaded lineup anchored by Alex Bregman at cleanup, and Wrigley's ivy-covered walls will be packed on a summer afternoon. Jays fans can catch the action on Sportsnet, TVA Sports, or SN590 THE FAN.

Pitching Matchup: Dylan Cease vs. David Peterson

This is the game's central storyline. Cease has been Toronto's anchor at the top of the rotation, a power arm who generates swing-and-miss stuff and generates weak contact when he's locating his slider. He'll face a Cubs lineup that is not easy to navigate — Chicago's order features legitimate threats from top to bottom, and Wrigley's day-game atmosphere can play havoc on visiting pitchers who lose focus.

Peterson gets the nod for the Cubs and will look to keep Toronto's offense off the board. The Jays' lineup construction heading into this one will determine how much pressure Peterson faces early. If Toronto can work counts and get into the Cubs' bullpen before the sixth inning, this game opens up considerably.

Chicago Cubs Starting Lineup

• 1. Pete Crow-Armstrong, CF
• 2. Seiya Suzuki, DH
• 3. Michael Busch, 1B
• 4. Alex Bregman, 3B
• 5. Ian Happ, LF
• 6. Nico Hoerner, 2B
• 7. Michael Conforto, RF
• 8. Dansby Swanson, SS
• 9. Miguel Amaya, C

Keys to Watch for the Blue Jays

Cease's Command Against a Deep Lineup

The Cubs don't have an obvious weak spot in their order. Bregman at cleanup is a disciplined, dangerous hitter who will punish anything left over the middle. Cease needs to work both sides of the plate and trust his secondary stuff. If he's locating his slider to both lefties and righties, Toronto is in excellent shape. If he's leaking pitches up and over the heart of the zone, Chicago's lineup will make him pay.

Handling Pete Crow-Armstrong at the Top

Crow-Armstrong leading off is a problem for opposing pitchers. He's a threat on the bases and puts pressure on the defense from the first pitch of the game. The Jays' defense will need to be sharp in center field, and Cease will need to be efficient in the first inning to avoid falling behind early.

Toronto's Lineup Response

Toronto's lineup has not been released as of publication, which makes it harder to project specific matchup advantages. What matters is whether the Jays can force Peterson into deep counts and get to the Cubs' bullpen. Chicago's relievers will be a factor in this one, and Toronto needs to manufacture opportunities before the back end of Chicago's 'pen takes over.

Prediction

Cease is the best pitcher on the field today, and that matters at Wrigley where run-scoring environments can be unpredictable. Trust Cease to give Toronto six competitive innings, and trust the Jays to scratch out enough offense against Peterson to come away with a series win. Blue Jays 4, Cubs 3.