The throw got past Leon just before Headley bowled into him, causing the catcher's right ankle to buckle under him. Leon rose and limped a few steps before dropping to his knees. He was helped off the field by a trainer and bench coach Randy Knorr.
Leon was called up from Double-A Harrisburg Sunday to replace catcher Wilson Ramos, who tore the anterior cruciate ligament in his right knee Saturday at Cincinnati.
Copyright 2012 by The Associated Press
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