Edwin Díaz just couldn’t get a grip. 

The Mets closer chalked up his control problems in Wednesday’s ninth inning to the slickness of the baseball on a 44-degree day at Citi Field.

It led to Díaz surrendering three earned runs over two-thirds of an inning in the 5-0 loss to the Marlins. 

“I was trying to hold [the ball] the hardest that I could, but I couldn’t,” Díaz said. “I couldn’t throw strikes today.” 

Díaz walked Xavier Edwards to begin the inning before unloading a wild pitch.

Jonah Bride delivered a one-out single for Miami’s third run of the day before Matt Mervis blasted a full-count slider over the right-field fence. 

After Díaz walked Griffin Conine with two outs, manager Carlos Mendoza removed the Mets closer and used Danny Young to record the final out. 

“I threw about 30 pitches and realized I didn’t have good command,” Díaz explained. He decided to focus on making contact with the catcher and getting outs on the field.

Luis Torrens missed a fifth straight start with a right forearm contusion, giving backup Hayden Senger another game at catcher.

The 28-year-old Senger, a career minor leaguer before this season, has left a positive impression on Mendoza. 

“We knew the defense was going to be there,” Mendoza said. “But the way [Senger] is handing the pitching staff, leading those guys, calling really good games, making adjustments, meetings with the starters. … We have seen how elite he is, receiving, the blocking and then offensively he’s giving us some real good at-bats.” 

Paul Blackburn is scheduled to throw live batting practice Friday at High-A Brooklyn. It will be the right-hander’s first time facing batters since he was placed on the injured list with right knee inflammation to begin the season. Blackburn is expected to need a minor league rehab assignment following a second live batting practice session next week. 

Francisco Alvarez was set to play five innings for Low-A St. Lucie in his first game action since undergoing surgery for a broken hamate bone in his left hand. 

Francisco Lindor had his streak of five straight games with a leadoff hit snapped. It was the longest such streak for a Mets player since José Reyes delivered seven straight leadoff hits in 2011.