Support WBURPitcher R.A. Dickey's Tale Is As Wild As A KnuckleballPlay05:25Download AudioMike PescaJuly 09, 2012 ShareNew York Mets pitcher R.A. Dickey delivers his signature pitch, with its unusual grip, against the Arizona Diamondbacks on May 6. He's the only knuckleballer in the major leagues, and the pitch has earned him a 12-1 record so far this season. (AP)