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    vs.      
Robert Graves is tied in the series against William Hahn, 1-1.

event round table player one result player two
Grand Prix Las Vegas 2017 (modern)714Graves, Robert (1982)Won 2-0Hahn, William (1914)
Grand Prix Dallas-Fort Worth 20185242Graves, Robert (1860)Lost 0-2Hahn, William (1826)