Grube was recalled from Triple-A Tacoma on Wednesday, Ryan Divish of the Seattle Times reports.
Grube had been with the Indians' Triple-A affiliate for part of the season before being released and signing a minor league contract with the Mariners. He's posted a 3.97 ERA and 1.13 WHIP in 10 appearances with the club's Tacoma affiliate. Home runs have been a problem for Grube all season, as he's allowed 14 over 90 Triple-A innings.