News that Grady Sizemore has not yet been cleared for baseball activities and that he's having difficulty, pain, and swelling with running is a major red flag. Sizemore is coming off microfracture surgery on his knee. It's a long, difficult rehab and most worryingly, there's never been a procedure in baseball that would meet with most people's definition of "success." While some, like Brian Giles and Chad Tracy, have come back from the surgery, neither returned to their previous levels.Will Carroll for SI. This report is considerably less optimistic then what we've heard from the Indians beat guys. There's much more information through the link.