Event: Division 2

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Opponent	Rating	Result
Ray E Hartley	1730	1 - 0
Gregory Barratt	0	1 - 0
Stephen J Smith	1719	0 - 1

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

1283 = (3449 + 400 * (2 - 1)) / 3)