CLEVELAND — Corey Kluber is back at the top of the Indians’ make-it-up-as-they-go rotation.

Cleveland will start its ace in Game 1 of the AL Championship Series against the Toronto Blue Jays, one of the few certainties Indians Manager Terry Francona has as his team plays for a spot in the World Series.

Trevor Bauer, who started the opener of the division series against Boston, will pitch Game 2 and Josh Tomlin will take the mound for Game 3 in Toronto on Sunday. After that, Francona has “penciled in” Mike Clevinger for Game 4, but that plan could change depending on what happens in the first three games.

The uncertainty is nothing new to Francona, who has been forced to juggle his rotation for weeks after losing starters Carlos Carrasco and Danny Salazar to injuries.

Francona’s decision to send out Kluber first was expected after the right-hander showed no signs of a late-season quadriceps injury and pitched seven shutout innings in Game 2 against the Red Sox. Kluber limited baseball’s highest-scoring team to three hits and ended any concerns about him not being himself in his first postseason.

The Indians will need Kluber and the rest of their staff to be on when they face the wild-card Blue Jays, who battered Texas in their ALDS by hitting eight homers and scoring 22 runs.

“They’re good,” said Indians pitching coach Mickey Callaway. “They’re excellent. Their whole roster is pretty good, as far as swinging the bat.

“They’re a little bit different makeup than Boston. They’re not going to sit around and take a first-pitch strike. You can’t just groove a first pitch to them.”

Kluber, who will face Toronto right-hander Marco Estrada in the opener, went 18-9 during the regular season, bouncing back from a 16-loss season in 2015. He was 0-1 with a 6.30 ERA in two starts against the Blue Jays.

While Francona has had to mix and match with his starters, he won’t have Salazar on the ALCS roster.