In the words of former American League umpire Nestor Chylak, umpires are expected to "be perfect on the first day of the season and then get better every day." Forced to deal with sullen managers and explosive players, they often take the blame for the failures of both. But let's face it--umpires are only human. For well over a century, the fortunes of Major League teams--and the fabric of baseball history itself--have been dramatically...