2. Roger Clemens feud
Mike Piazza owned Roger Clemens.
Before Clemens ever beaned Piazza in the head or threw the barrel of a bat at Piazza in the World Series, Mike Piazza was 7-for-12 with 3 career homers against Roger Clemens.
The ill-tempered Clemens would lose his cool because of one trademark Piazza swing in the third inning of a Subway Series game in 2000.
With the bases loaded, Piazza hit a flat slider and followed through for a 425-foot grand slam.
