Taillon was scheduled to pitch on Tuesday, Pirates general manager Neal Huntington said. The Pirates will continue to evaluate Taillon and hold him out of game action until further notice.
"We're working through exactly how long and what the severity is, working through the evaluation process," Huntington said.
The second overall pick in the 2010 Draft, Taillon advanced to Triple-A Indianapolis at the end of the 2013 season. He underwent Tommy John surgery last April and missed the entire season.
The 23-year-old right-hander has been pitching in extended spring training games. He was expected to advance soon to one of the Pirates' Minor League affiliates, most likely the Gulf Coast League club, to continue his rehabilitation.