If it were possible for the Mets lineup to get any weirder, that occurred Monday when James McCann was handed an even larger glove.

The Mets catcher moved to first base for his initial professional appearance at the position, allowing manager Luis Rojas to place an additional experienced righty bat in the lineup against the Rockies. McCann batted third.

Pete Alonso’s placement on the injured list Friday with a sprained right hand had meant a combination of Dominic Smith and Brandon Drury playing first base for the weekend series in Miami, during which Rojas says team brass discussed the idea with McCann.

“That is a position I am going to say [McCann] is familiar with, even though he hasn’t played there professionally. But he’s familiar with the position,” Rojas said. “He’s worked there before, he’s looked good to us, so I don’t think we are going to be compromised with him playing first from a defensive standpoint.”

The experiment might be easier to comprehend if McCann were hitting, but he’s been among the team’s biggest disappointments. He entered play with a .200/.270/.238 slash line with one homer and eight RBIs after ceding playing time behind the plate over the last week to Tomas Nido. But options all around were limited for the Mets, with Drury, Wilfredo Tovar, Khalil Lee and Patrick Mazeika as the bench options for a team that has 16 players on the IL.

Cameron Maybin and Johneshwy Fargas started in the outfield, joining Smith.

“We feel pretty good and have the bat presence there [with McCann], which is something we need right now,” Rojas said. “We need presences in the lineup. We’re facing a lefty and McCann is a guy we think with some other guys in there we can manufacture some runs.”

J.D. Davis is expected to receive first-base reps at Triple-A Syracuse, but he might not rejoin the club before the Mets complete their homestand on Sunday, according to acting general manager Zack Scott. Davis has been on the rehab trail from a left hand sprain, but was scratched from his Sunday start with a stiff neck.

Scott is hopeful Alonso will return by next week, adding it’s possible the first baseman will need minor league rehab games.

McCann played one game at third base in the minor leagues, but otherwise has been utilized strictly as a catcher. In recent days he’s worked with infield coach Gary DiSarcina at first base.

“[McCann] was very outgoing about doing it,” Rojas said. “We have been talking about it for two days now and he’s very outgoing, very easy going about it. He’s been getting his work with Gary and with our evaluation he’s looked good so that is why we’re throwing him in there. We feel he is going to help us win, at first base and hitting third against the lefty.”

Scott said he’s pleased with the resourcefulness the Mets displayed in going 3-3 against the Braves and Marlins to finish a nine-game road trip. Overall, the Mets lost six of nine games on the trip.

“I’m proud of the way they have played lately, there’s scratching and clawing and for the most part our pitching has kept us in games, that allows us to scratch out some runs and pull out some games,” Scott said. “But it’s a hard way to play every day, all these tight games, and the randomness of baseball is not going to help you in all those games.”