Mariners' Donn Roach: Optioned to Triple-A

Roach was optioned to Triple-A Tacoma on Thursday, Greg Johns of MLB.com reports.

The Mariners made a switch in their bullpen Thursday by calling up Tom Wilhelmsen and sending Roach back down to Triple-A. Roach had a 10.80 ERA in three appearances with the Mariners during his stint.