Do you need a report to suggest it for it to have been fact?
I understand people used to play with injuries, but that still doesn't negate the fact that it could cause him to pitch poorly and he could be better off taking a few games off to let it heal. (IE the DL)
What would you rather have? Your star pitcher back at full health? Or him being able to beat his chest and tell people he's a man because he plays through injuries?