Event: Div 1 - Davy Trophy

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Opponent	Rating	Result
Peter Ackley	2107	½ - ½
Andrew J Ledger	2335	½ - ½
Marek Gajdosz	1972	1 - 0
Jim Burnett	2156	½ - ½
Chris N Ross	2248	1 - 0
Peter Ackley	2107	1 - 0
Peter Shaw	2202	1 - 0
Jonathan W Arnott	2201	½ - ½
James RG Marley	1999	1 - 0

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

2370 = (19327 + 400 * (5 - 0)) / 9)