Event: Sheffield Chess Centre U1300

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Opponent	Rating	Result
Ethan Ball	1159	0 - 1
Raphael Shan	1107	0 - 1
Alfie Robinson	1290	0 - 1
Omar Moylayev	824	0 - 1
Danavir Dhunna	1123	0 - 1

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

701 = (5503 + 400 * (0 - 5)) / 5)