PORT ST. LUCIE — As someone competing for a rotation spot, Tylor Megill doesn’t have the luxury of just working on his pitches this spring.

Results matter for the Mets right-hander.

On that count, Megill could take a measure of satisfaction Saturday from his performance in the Mets’ Grapefruit League opener at Clover Park.

“I have got to go out there and perform, and obviously results are a big deal,” Megill said after allowing one run on two hits over two innings with three strikeouts in the Mets’ 10-5 loss to the Cardinals.

Megill arrived at camp as starting pitching depth but in recent days has become a candidate to begin the season in the rotation, after Kodai Senga was diagnosed with a moderate strain of the posterior capsule in his right shoulder that almost certainly will preclude him from the Opening Day roster.

The Mets have other options, most notably Jose Butto and Joey Lucchesi, as possibilities to join Luis Severino, Jose Quintana, Sean Manaea and Adrian Houser in the rotation. But team officials might be the most intrigued by Megill, based on a productive offseason in which he worked to implement a splitter.

Megill said he threw the pitch just twice Saturday — and didn’t get a swing and miss on either — but worked in a sweeper and curveball along with his primary fastball/slider combo.

For the splitter (a pitch from which the bottom drops) to become a legitimate weapon, Megill understands he will have to work ahead in the count.

“I’ve got to attack hitters,” he said.

Brendan Donovan got plunked by a Megill cutter to begin the afternoon, and Lars Nootbaar’s jam-shot single gave the Cardinals a rally. But Megill retired the next three batters, with a run scoring on Ivan Herrera’s ground out.

“He had to work early on, but he made pitches and he was all right,” manager Carlos Mendoza said.

Megill allowed a bloop single to Alfonso Rivas to begin the second before getting Buddy Kennedy to hit a double-play grounder. Megill completed his afternoon by striking out Victor Scott II.

“First inning, bit of a struggle,” Megill said. “The first batter, a cutter, and then I went straight into the stretch and felt rushed. I slowed down toward the end and got my control back and then the second inning went pretty smoothly as well.”

Competing for a job in spring training is hardly a new experience for Megill, who as a pitcher with minor league options remaining has had to wait in line behind the veterans in camp during his career.

Despite losing a battle with David Peterson in camp last season to replace an injured Quintana in the rotation, Megill quickly returned after Justin Verlander needed an injured list start to begin the season.

Megill started 25 games for the Mets last season and pitched to a 4.70 ERA with a 1.575 WHIP. But Megill finished the season strong for the Mets, pitching to a 2.76 ERA over his final five starts.

Megill said he arrived at camp ready to perform at game level.

“I personally don’t like ramping up during spring training,” Megill said. “I like to be ready to have that under my belt. I have done it and I am ready for it come the time I need to come out and do it. I am not crazy sore when I am done throwing, when I do the buildup process, when I am doing it here.”