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    vs.      
Michael Phelps is tied in the series against Matthew Sperling, 1-1.

event round table player one result player two
Grand Prix Oakland 20101132Phelps, Michael (1617)Won 2-1Sperling, Matthew (1949)
Grand Prix Portland 20104136Phelps, Michael (1680)Lost 1-2Sperling, Matthew (2007)