Although the Tigers haven't made an official announcement yet as to who will be taking recently demoted Rick Porcello's roster spot, Tigers beat reporter Jason Beck is reporting 25-year-old right-hander Jay Sborz:
Jay Sborz was reportedly told after the game that he's heading up to the Tigers. Good work by the Toledo Blade site for tracking that down. Still don't know Porcello's replacement in the rotation, but at least we know his replacement on the roster for now.
Beck said that the Tigers won't need a fifth starter until Saturday in Atlanta, so the rotation replacement may not be known until closer to then.
For all the analysis on this move, check out SB Nation's Detroit Tigers blog, Bless You Boys