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Right-hander Bryce Miller (0-2, 4.50 ERA) pitches for Seattle on Wednesday.
The Mariners have yet to name a starter for Tuesday’s opener of a three-game series in Cincinnati.
The Kraken host St. Louis on Saturday and the Golden Knights play their regular-season home finale that night against Nashville.
Mariners RHP Bryce Miller (0-2, 5.73) pitches against Texas RHP Jacob deGrom (0-0, 3.38) on Friday night.
Mariners right-hander Luis Castillo (1-1, 3.00 ERA) faces Astros left-hander Framber Valdez (1-1. 3.75 ERA) on Tuesday night.
Mariners manager Dan Wilson said Robles has a shoulder-related injury and was having tests done at Oracle Park.
Both teams play Saturday. The Kraken are at San Jose. The Canucks will host Anaheim.
Mariners catcher Cal Raleigh singled in the first inning to reach base safely for a career-best 20 straight games.
Mariners right-hander Logan Gilbert (0-1) struck out 10 in five innings.
Tigers right-hander Casey Mize will start Tuesday against Seattle ace Logan Gilbert (0-0, 1.29 ERA).