Event: Bishop 2019-20

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Opponent	Rating	Result
Julie L Denning	126	0 - 1
Chris Snook-Lumb	150	1 - 0
W John Marshall	145	0 - 1
David Gray	57	1 - 0
Andrew Burling	81	1 - 0

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

192 = (559 + 400 * (3 - 2)) / 5)