Roy Halladay pitches a Perfect Game

Coming off of a bad start (and a couple of games of having thrown lots of pitches, so I avoided having him on my fantasy baseball team yesterday), Roy Halladay of the Philadelphia Phillies pitched the 20th perfect game in Major League Baseball history. Dallas Braden of the Athletics pitched a perfect game earlier this month. Most baseball fans know that Halladay is a great pitcher, but I think that he's still underrated when it comes to all-time rankings (formal or informal).