I guess it’s from throwing, and I get work in that area a lot," Nola said of the injury. "I’m not really sure,” he said. “I’ve never had a stress fracture in my rib before."

Philadelphia Phillies pitcher Aaron Nola breaks his silence amid his setback over a stress fracture in his rib, and he "doesn't really know" how he got the injury.

Philadelphia Phillies starter Aaron Nola, who hasn't pitched since May 14 due to a right ankle sprain, could be out for another month after tests revealed a separate rib injury.