Perfect games do not happen often; when they do recognition has to be given. Buehrle's perfect game was the 17th of all time in the regular season.
The only sure thing about no-hitters and perfect games is that there is always at least one extraordinary game saving defensive play, this instance was no exception. I don't know why but this always seems to happen. DeWayne Wise, a defensive replacement for the Sox sprinted towards the wall leaped up and took a way a home run. When he came back to earth he bobbled the ball but managed to hang on, this play will stay with both of them forever.
Here it is.