Event: Dudley Townshend Trophy

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Opponent	Rating	Result
Callum Bing	0	0 - 1
Peter J Hughes	1445	1 - 0
Paul Bignall	1512	½ - ½
Bill Dixon	1464	1 - 0
Andrew S Whitten	1654	0 - 1

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

1215 = (6075 + 400 * (2 - 2)) / 5)