Manager Aaron Boone made the announcement Tuesday, adding that Loaisiga will start Thursday against the Tampa Bay Rays.
Loaisiga is 6-1 record with a 3.00 ERA and 58 strikeouts in 10 games combined for Double-A Trenton and Single-A Tampa this season. Other potential call-ups in Triple A included Justus Sheffield and David Hale.
The rotation replacement comes after Tanaka was hurt running the bases in Friday’s win over the New York Mets at Citi Field. The right-hander strained both hamstrings tagging up from third and scoring a game-tying run in the sixth inning after batting at the NL ballpark.
Boone previously said Tanaka could be out for “weeks,” although he mentioned Tuesday the Yankees still aren’t sure how many starts they would need Loaisiga to make. It could be one, two or even three, according to Boone.
Four hours before Tuesday’s series opener against the Washington Nationals, the right-handed Tanaka was out early playing catch for the first time since suffering the injury.