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

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