Cecil made his return one day earlier than expected, in part because of a pressing need in Toronto's bullpen. On Sunday, long relievers Chad Jenkins and Aaron Laffey both threw multiple innings in a 9-4 loss to Tampa Bay, which prompted the promotion of Cecil.
The 26-year-old went 4-4 with a 2.95 ERA in 15 starts with Triple-A Las Vegas. He has spent parts of four seasons in the big leagues, with all but one of his 75 appearances coming as a starter.
Cecil will now transition to the bullpen, where he is expected to be used as a lefty specialist and multiple-inning reliever. Despite the lack of relief experience at the big league level, Cecil was a closer in college and is familiar with the new role.
He also has limited lefties to a .230 average and .654 OPS, which could bode well for a spot in the bullpen.
"His splits have always been good," general manager Alex Anthopoulos said this weekend, when asked to explain the new role. "We will never rule out him being able to start again, but right now some other guys have gone ahead of him from the starting rotation standpoint."
Frasor was officially activated from the 15-day disabled list on Sunday, but did not re-join his teammates until Monday. He had been out since July 17 with right forearm tightness, but a period of extended rest meant any type of serious injury was avoided.
The 35-year-old Frasor is 1-1 with a 4.00 ERA in 42 appearances this season. He'll be looking for a strong finish to the year, as the pending free agent is set to hit the open market during the offseason.