Taillon suffered a left hamstring strain in the second inning of Sunday's game against the Giants, Bruce Levine of 670TheScore.com reports.
Taillon pulled up lame on the final pitch of a six-pitch walk to Matt Chapman in the top of the second inning, and his departure is now understood to be the result of a hamstring injury. The right-hander now appears to be at risk of going on the 15-day injured list, and depending on the severity of the strain, Taillon could be forced to miss extended time. Javier Assad came on in relief of Taillon and could be a potential replacement in the rotation if Taillon is forced to the IL, though Matthew Boyd (knee) could also be ready for activation the next time a fifth starter is needed.