TORONTO — Marcus Semien’s absence from the Mets will be an extended one.
The Post’s Jon Heyman reported Monday that the veteran second baseman, who was placed on the injured list in recent days with a left hip flexor strain, will miss four to six weeks, minimum.
Semien’s injury was a Grade 3 strain; he tried to play through it before it severely limited his movement.
“He’s got a little bit of time before he’s back on the field with us,” interim manager Andy Green said before the Mets fell 2-1 to the Blue Jays.
Ronny Mauricio and Brett Baty are the second base options in Semien’s absence.
Luis Robert Jr. is scheduled to begin a minor league rehab assignment Tuesday with Triple-A Syracuse.
The veteran outfielder has been on the injured list since April 27 with a lumbar disc spine herniation.
Tobias Myers was optioned to Syracuse and Joey Gerber recalled to give the Mets a fresh arm in the bullpen. Myers, who owns a 14.54 ERA this month, allowed three earned runs over three innings against the Phillies on Sunday — a fourth straight shaky appearance.
Green said rather than stretch out Myers as a starter in the minors, the goal is to “stack innings” before he returns.
“He has the ability to win south of the strike zone and he struggled to get pitches down there [Sunday],” Green said. “If he does that, he will pitch meaningful innings for us, and whether that’s in starting capacity or relief is not determined yet.”
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Gerber pitched a scoreless eighth Monday night with a pair of strikeouts.
The Mets have Nolan McLean and Freddy Peralta lined up to start the final two games of this series before Thursday’s off day.
The rookie McLean was tagged for six earned runs over six innings last week against the Cubs, but Green said he is not concerned about the right-hander, who has pitched to a 4.03 ERA this season.
“He did a lot of good things and he paid the price for long balls,” Green said. “He was one pitch away of being through six innings of three-run baseball with nine punch-outs; he left a pitch up and it got hit. That’s the nature of the game and I think he takes that personally.”
