Blue Jays manager Charlie Montoyo confirmed that Hatch will start Monday's game against the Red Sox, Mitch Bannon of SI.com reports.
Before committing to starting Hatch in Monday's series opener, the Blue Jays made the right-hander available out of the bullpen in an emergency for Sunday's game against the Mets, but he wasn't needed in Toronto's 5-4 loss. Hatch has gone unused since being called up from Triple-A Buffalo on July 19, so Monday's outing will mark his 2021 debut for the big club. Alek Manoah (back) is ultimately expected to displace Hatch as a starter, but the latter could end up making two or three turns through the rotation due to a doubleheader against the Red Sox coming up Aug. 7.