Event: Bob Burns 2019

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Opponent	Rating	Result
Paul Kadzionis	96	½ - ½
Mark D Crowther	185	0 - 1
Dave Young	79	1 - 0
Derek Ludlam	106	1 - 0
Mike Bramson	153	0 - 1

performance = (sum(opponents ratings) + 400(wins-losses)) / games

124 = (619 + 400 * (2 - 2)) / 5)