The Mets’ walking wounded includes three former All-Stars, but that list should shrink by at least one to start Round 2 of the Subway Series on Friday.

Yoenis Cespedes, who hasn’t played for the Mets since May 13, is expected to be removed from the disabled list and start at DH against the Yankees in The Bronx, giving the team a much-needed jolt in the lineup.

Jay Bruce and Todd Frazier joined Cespedes on the DL in recent weeks, further depleting a Mets lineup that has been among the most anemic in baseball this season. Neither Frazier nor Bruce is expected to immediately return.

Cespedes’ comeback from hip flexor and quadriceps injuries is probably too late for a team buried in the NL East and wild-card standings, but it can perhaps help the Mets at least resemble a respectable club in this Subway Series and beyond.

The Mets (39-55) begin the post-All Star break last in their division, and only the Padres have a worse winning percentage among NL teams.

“I would just like to see this team come together and put the first half away and see what we can do in the second half, see if we can surprise some people,” Brandon Nimmo said.

“People talk about guys coming off the DL, but I think there is a lot of talent in this room regardless, so I think we finished the little stint going into the All-Star break well and if we can continue that I think it will put us in a good place when we get to the end of the year.”

The Mets are 7-7 in July, which might not sound like much until you consider they have not won a series since they played the Diamondbacks at Citi Field in late May.

Last month the Yankees won two of three games in Round 1 of the Subway Series, as the Mets avoided a sweep with a victory in the Sunday night finale, behind Seth Lugo’s dominance.

This time the Mets will have their rotation aligned, with Noah Syndergaard, Steven Matz and Jacob deGrom set to pitch against the Yankees in succession. Syndergaard will be pitching at Yankee Stadium for the first time in his major league career.

“We are 13 ½ games out, it’s not over by any means, but it’s a big hill we’ve got to climb and we are focused on winning games,” Frazier said. “Hopefully things will turn around. Crazier things have happened.”

The Mets’ rotation has been a strength, with Zack Wheeler joining the three scheduled starters this weekend to give the team four legitimate arms.

But the lineup, besieged by underperformance and injuries, hasn’t given the Mets a chance in nearly enough games. And the bullpen has been erratic, with Jerry Blevins and Anthony Swarzak two big reasons the Mets have blown games in late innings.

“We did have some injuries and that definitely doesn’t help,” Nimmo said. “But I think we also ran into some bad luck along the way in big situations and those can sometimes snowball into bigger things. I think it was just a combination of a lot of things that got us to this point. Whatever it may be, we just need to learn from it.

“There’s a lot of young guys from this team that are learning from veteran guys so we are all trying to learn along the way and take lessons from it.”