Peter Gammons went on Dan Patrick's radio show to talk about umpire Angel Hernandez's egregious blown call from Wednesday night's A's-Indians game. Gammons offered an interesting explanation for how Hernandez could have failed to properly call what was a clear home run even after looking at a video replay.

Much has been made of umpire Angel Hernandez's botching of replay review in last night's Oakland-Cleveland game, a mistake that might have cost the A's the game. You've doubtless already seen the play numerous times on your home TV or computer screen, but you've probably never seen it the way Hernandez did—or how…

In some bizarre way, the terrible call Angel Hernandez made in Cleveland is a great argument for more video replay and also no replay whatsoever.

Welcome to Better Know An Umpire, an effort to educate ourselves on the human elements who have ultimate decision-making power over some 2,500 Major League Baseball games a year. (All cumulative statistics are through the 2011 season, unless otherwise stated.)

On Saturday, Juan Manuel Marquez will step into the ring for a third time against Manny Pacquiao. This time around, Marquez—who's moving up in weight for the fight—has a new physique. He has retained the services of Angel Hernandez, the strength and conditioning coach who has been working with Jamaican sprinter Usain…