Event: League Division 1

Opponent Rating Result
Paul May 1833 ½ - ½
Alex Howdle 1645 1 - 0
Randolph E Donahue 1789 1 - 0
Paul Pritchard 1863 ½ - ½
Rob Lockwood 1615 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1909 = (8745 + 400 * (2 - 0)) / 5)

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