Wallner was injured while beating out an infield single in the first inning of Tuesday’s win over the Mets. He was removed from the game and replaced by DaShawn Keirsey Jr., who also started in right field in place of Wallner on Wednesday.
The 27-year-old Wallner, a Minnesota native, has played in 18 games this season, mostly batting in the leadoff spot, although he was hitting third or fourth in the lineup in the past three games.
Wallner is slashing .263/.373/.474 and his two triples are tied for the major league lead.
The left-handed hitting Wallner typically struggles against southpaws, although he is 3-for-5 with his only homer vs. lefties thus far this season. For his career, however, he’s just 17-for-102 (.167).
In 187 career games, Wallner is batting .252 with 30 homers and 91 RBIs.
No corresponding roster move was indicated but Minnesota might have to bring up two players as utilityman Willi Castro left Wednesday’s game with oblique tightness.
The Twins are off Thursday before beginning a three-game set in Atlanta on Friday.
