A few hours after Mets owner Steve Cohen stood up for Buck Showalter as his manager, Showalter attempted to stand up for his players — and promptly got ejected.

Showalter was tossed with two outs in the eighth inning after Brewers left fielder Christian Yelich hit a two-run single to give Milwaukee a 5-2 lead.

It marked the second time in four days that he has been ejected, with the other coming in the ninth inning of Sunday’s bullpen meltdown against the Phillies.

Showalter was tossed by first base umpire Ron Kulpa, though someone from the Mets dugout also appeared to yell at Kulpa — with Kulpa engaging and shouting back — from the railing before Showalter jumped out of the dugout.

Earlier in the frame, Showalter, as well as reliever Adam Ottavino, catcher Francisco Alvarez and most of the Mets, was frustrated when Brewers center fielder Joey Wiemer was awarded a hit by pitch, instead of getting called for a strike or foul ball for appearing to complete a swinging motion.

Ottavino’s pitch veered inside and hit Wiemer in the hand or wrist area, and he dropped in pain as his helmet also fell off.

Alvarez conversed with home plate umpire Carlos Torres before the next at-bat, but Wiemer still strolled toward first base after the trainer finished examining him.

That call loaded the bases.

Three pitches later, the Brewers extended their lead by two when Yelich’s hit squeaked past second baseman Jeff McNeil.

Showalter had appeared frustrated throughout the entire game, including in the first inning when he was upset about the second called strike in Starling Marte’s first at-bat.

When Showalter was ejected on May 9, it marked his first time getting tossed from the game as manager of the Mets.

Against the Phillies on Sunday, he expressed frustration for a check-swing call in a Mark Canha at-bat in the last inning.

Showalter’s latest ejection placed him in a tie for second in the National League with Torey Lovullo, Oliver Marmol and Bob Melvin, and one behind Reds manager David Bell.