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    vs.      
Brent Clawson is tied in the series against Valentin Mackl, 1-1.

event round table player one result player two
Grand Prix Indianapolis 2015QClawson, Brent (1813)Won 2-1Mackl, Valentin (1973)
Grand Prix Seattle-Tacoma 2015478Clawson, Brent (1884)Lost 1-2Mackl, Valentin (1952)