Rhona Wise-USA TODAY Sports

The Mets are calling up left-hander T.J. McFarland, reports Anthony DiComo of MLB.com. The southpaw wasn’t on the 40-man roster but the Mets already had vacancies in that regard. Fellow lefty Josh Walker will be optioned to open a spot on the active roster.

McFarland, 34, signed a minor league deal with the Mets this winter. He’s spent the year in Triple-A Syracuse, tossing 32 2/3 innings over 23 appearances. He has a 2.76 ERA in that time, striking out 25.9% of opponents while walking 11.9% of them and getting grounders on 62.8% of balls in play.

The lefty has plenty of big league experience as a ground ball specialist. He has a 4.13 career ERA in 472 1/3 innings, striking out just 13.5% of hitters at the big league level but keeping the ball on the ground at a 62.1% clip. He was released by the Cardinals in August of last year after posting a 6.61 ERA, though that figure was at 2.56 the year prior.

The Mets have operated with Brooks Raley as their primary left-hander this season, with pitchers like Walker and Zach Muckenhirn also getting into the mix. McFarland’s strong work in Triple-A this year will now get him a chance to play a role in the bullpen. Mets’ relievers have a combined 4.22 ERA, a mark that places them 22nd out of the 30 clubs in the league.

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