Before the Yankees open the ALDS, they’ve got plenty of decisions to make — including who starts in left field and at first base, as well as what their pitching staff will look like.

They finalized one of those moves Wednesday by announcing that Carlos Rodon would start Game 2 on Monday in The Bronx.

The lefty will follow ace Gerrit Cole, who will get the ball Saturday in the opener against the Royals.

Being tabbed for Game 2 is the latest step forward in Rodon’s bounceback season after a disastrous debut with the Yankees a year ago.

Pitching coach Matt Blake noted in a Zoom call Wednesday that Rodon has been good for much of the second half of the season and has done well using a bigger pitch arsenal. He’s also pitched better at home than on the road.

Since three straight clunkers to end June and three consecutive mediocre outings to open July, Rodon has been very effective. He finished the regular season with a 2.91 ERA over his last dozen starts after putting up a 4.64 ERA in his first 20.

Blake commended Rodon’s ability to adjust and begin to trust his curveball and changeup, in addition to the fastball/slider repertoire he brought to the Yankees.

“I just think the mental growth we’ve seen of him understanding who he is and understanding who he can be going forward,’’ Blake said. “He’s done a really nice job continuing to evolve.”

He added that the team hasn’t landed on a starter for Game 3, waiting until they see if Clarke Schmidt or Luis Gil is needed out of the bullpen in one of the first two games.

Blake noted Schmidt could be used as a “Swiss Army knife” option, capable of pitching a high-leverage inning or for multiple innings.

And the pitching coach said there was “definitely a concern” about using Gil out of the bullpen, since it’s something the rookie has never done in the majors — and hardly ever in the minors. Schmidt has experience there, particularly two seasons ago.

Whoever ends up in the pen will join a group that has largely pitched well, but also faces questions going forward.

Blake said that in addition to Luke Weaver — who figures to be used primarily as a closer — the Yankees will also look to Ian Hamilton, Tommy Kahnle and the embattled Clay Holmes, as well as lefties Tim Hill and potentially Tim Mayza.

They remain encouraged by the progress made by Jake Cousins, who is rehabbing from a pec injury.

As for Marcus Stroman — who was bumped out of the rotation in mid-September then made one more awful start before the end of the regular season — his role remains very much up in the air.

“He’s still in the mix here for the roster, as far as providing protection,’’ Blake said of the right-hander’s status. “We’ll work through and talk about a bunch of names. It depends how many pitchers we decide to take.”

The other name not mentioned by Blake was Mark Leiter Jr., who has been inconsistent since his arrival from the Cubs prior to the trade deadline.

The Yankees, though, still like the right-hander’s ability to get swings-and-misses.