Event: Doncaster Bell Trophy

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Opponent	Rating	Result
Peter JE Ackley	201	0 - 1
Zak Tomlinson	1675	0 - 1
Nicholas Mahoney	136	1 - 0
A David Smart	122	½ - ½
Vlad Shaposhnikov	128	½ - ½
Peter JE Ackley	201	0 - 1
Zak Tomlinson	1675	0 - 1
Nicholas Mahoney	136	½ - ½
A David Smart	122	1 - 0
Vlad Shaposhnikov	128	1 - 0

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

412 = (4524 + 400 * (3 - 4)) / 10)