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    vs.      
Jacob Haversat is tied in the series against Wing Chun Yam, 1-1.

event round table player one result player two
Grand Prix Indianapolis 2017512Haversat, Jacob (1933)Lost 0-2Yam, Wing Chun (1949)
Grand Prix Washington DC 2017459Haversat, Jacob (1917)Won 2-0Yam, Wing Chun (1982)