Event: Division 1

Opponent Rating Result
Donald J Mason 2157 0 - 1
Robert Reynolds 1761 ½ - ½
Mark A Cundy 1957 ½ - ½
Philip RC Wood 1839 1 - 0
Darren H Whitmore 1874 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1998 = (9588 + 400 * (2 - 1)) / 5)

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