Event: Division 4

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Opponent	Rating	Result
Stephen Rumsby	1547	1 - 0
Roland Robson	1367	½ - ½
Rocco Beer	1105	1 - 0

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

1606 = (4019 + 400 * (2 - 0)) / 3)