Clase owns a .156 average and .311 slugging percentage across the 58 plate appearances he's logged for Triple-A Tacoma since his April 29 demotion.
The Mariners optioned Clase to Triple-A Tacoma on Monday, Shannon Drayer of Seattle Sports 710 AM reports.
Clase is out of the lineup for Wednesday's game against the Rangers.
Clase is not in the starting lineup for Game 2 of Sunday's doubleheader with the Rockies.
Clase went 2-for-4 with a two-run single in a win over the Rockies on Saturday.
Clase went 1-for-3 with a walk, a stolen base and a run in a win over the Reds on Wednesday.
Clase went 1-for-4 with an RBI double in a win over the Reds on Tuesday.
Clase will start in left field and bat eighth in Monday's game versus the Reds.
Clase was recalled from Triple-A Tacoma by the Mariners on Monday, Shannon Drayer of Seattle Sports 710 AM reports.
Clase was optioned to Triple-A Tacoma on Monday, Daniel Kramer of MLB.com reports.