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Matthew Mccullough is tied in the series against Robert Wallerstein, 1-1.

event	round	table	player one	result	player two
Grand Prix Kansas City 2011	4	148	Mccullough, Matthew (1467)	Lost 1-2	Wallerstein, Robert (1539)
Grand Prix Seattle 2019	13	52	Mccullough, Matthew (1826)	Won 2-0	Wallerstein, Robert (1881)