"If all goes perfectly and he gets a nice fill in there -- it's almost like people who are bald and are using something ... some get nothing, some get peach fuzz and some get everything -- if he gets a nice fill and he rehabs well, he should be able to do what he's done before," DiNubile said. "If he gets a partial fill, then the knee is going to be cranky and it's going to act like a knee that has a problem. As far as speed and burst, he should be able to get that. The real question is, how long does it hold up?"