SEATTLE -- Bryan Woo , the Seattle Mariners ' All-Star starter, was left off the team's roster for the American League Division Series, a clear indication that he has not fully recovered from a pectoral injury.

The Mariners will start George Kirby and Luis Castillo , respectively, in the first two games against the Detroit Tigers and are expected to go with Logan Gilbert on the road in Game 3. Woo's absence means Bryce Miller will act as the fourth member of their rotation in the best-of-five series, though he might also be utilized out of the bullpen.

Woo, 25, had a breakthrough season this year, going 15-7 with a 2.94 ERA in 30 starts. But he exited his Sept. 19 start in Houston after a few warmup tosses at the start of the sixth inning and was diagnosed with right pector

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