ARLINGTON -- Rangers outfield prospect Willie Calhoun appears to have run afoul of his manager on Sunday.

Manager Jason Wood removed Calhoun from Triple-A Round Rock's game at Omaha after he grounded out in the first inning.

Willie Calhoun, Texas' top prospect, has left tonight's game in Omaha after grounding out in his first AB. No reason announced. #Rangers @BaseballAmerica — Donny Baarns (@DonnyBaarns) May 28, 2018

According to the Rangers, Calhoun is not being promoted to the majors and is not injured. That leaves "manager's decision," which in this case suggests Calhoun did not run hard on the grounder. The Rangers encourage their minor-league mangers to do that when justified.

Wood and Calhoun could not be reached for comment.

Calhoun, the key player for the Rangers in last year's deal that sent right-hander Yu Darvish to the Los Angeles Dodgers, has been having a trying season.

The Rangers sent him out during spring training with the command to work on his defense in left field. Calhoun is batting .266 with four homers, 17 RBIs and a .708 OPS. He hit .300 with 31 homers, 93 RBIs and a .927 OPS in the Pacific Coast League last season.

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