Event: 6th Somerset New Year Major

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Opponent	Rating	Result
Justin Morgans	0	1 - 0
Colin J Davis	1984	½ - ½
Rob Fursman	1760	1 - 0
Pengxiao Zhu	1892	0 - 1

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

1509 = (5636 + 400 * (2 - 1)) / 4)