Woo will be available out of the bullpen Friday in Game 5 of the ALCS versus the Blue Jays, Tim Booth of The Seattle Times reports.
Woo had been a candidate to start Game 5, but the Mariners will instead turn to Bryce Miller for their final home game of the series. The 25-year-old Woo has not appeared in a game since Sept. 19 due to right pectoral inflammation, but he's healthy now and will give Seattle some length in relief, if needed.