Replying to @nickpiecoro
Zac Gallen is scheduled to throw 80 pitches tonight at the alternate site, so that would seemingly rule him out to take Caleb Smith's spot on Friday.
As @SteveGilbertMLB
noted, Taylor Widener is listed as Friday's starter in the game notes, meaning the club will have to figure out a starter for Saturday before the rotation swings around to Luke Weaver on Sunday.