Event: Walker Shield

Opponent Rating Result
Leon A Garfield 1480 ½ - ½
Felix Coker 1270 ½ - ½
Malcolm Snashall 1474 ½ - ½
Leon A Garfield 1480 1 - 0
Felix Coker 1270 1 - 0
Mark Towlson 1540 0 - 1
Daniel Allen 1188 1 - 0
Bob Wallace 1470 0 - 1
Graeme Boxall 1435 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1490 = (12607 + 400 * (4 - 2)) / 9)

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