Pittsburgh right-hander Luis Heredia was lifted from his start with Class A West Virginia Saturday with discomfort in his throwing shoulder, according to the Pirates.
The organization's No. 10 prospect threw just one pitch in his scheduled start against Lexington before leaving because of the discomfort. The team said Heredia will be reevaluated in the coming days.
The start was Heredia's second with the Power this season. In his first, he took the loss while allowing four earned runs on six hits over five innings to Lexington.
The Mexican hurler signed with the Pirates for $2.6 million in 2010. He was scheduled to begin 2013 with West Virginia but was held in extended spring training after arriving to camp out of shape. He made his full-season debut with the Power in June and went 7-3 with a 3.05 ERA over 14 appearances (13 starts). Heredia came into Spring Training this year notably slimmer -- the Pittsburgh Tribune Review reported he lost 40 pounds.
The news comes about a week after the team announced that fellow right-handed pitching prospect Jameson Taillon would undergo Tommy John surgery, effectively ending his 2014 season.