Event: Andrew Leadbetter Memorial Trophy

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Opponent	Rating	Result
Jack T Smith	1255	1 - 0
Adam Jones	1327	1 - 0
Glen Clouds	1676	0 - 1
Mick Tait	1540	0 - 1
Koray Bulanik	1493	0 - 0

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

1450 = (5798 + 400 * (2 - 2)) / 4)