Manager Joe Espada said Pressly was unavailable for Friday's game against the Brewers due to a sore finger on his right (throwing) hand, Chandler Rome of The Athletic reports.
Lee is set to undergo season-ending surgery in the next few weeks for a torn labrum in his left shoulder, Shayna Rubin of the San Francisco Chronicle reports.
The Giants placed Winn on the 15-day injured list Friday with a right forearm strain, retroactive to Wednesday, Susan Slusser of the San Francisco Chronicle reports.
In series opener, Astros travel to face Giants
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