Event: Doncaster Bell Trophy

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Opponent	Rating	Result
Sean O McDonald	176	1 - 0
Peter Dawson	122	1 - 0
Martin S Simmonds	149	0 - 1
Richard E Desmedt	153	0 - 1
Ismet Berisha	143	½ - ½
Sean O McDonald	176	0 - 1
Alexandru Zimleanschi	136	½ - ½
Neil R Lowther	155	0 - 1
Anthony Perry	112	0 - 1
Alan Bramall	141	1 - 0
Martin S Simmonds	149	½ - ½
Neil R Lowther	155	0 - 1
Alan Bramall	141	½ - ½
Sean O McDonald	176	1 - 0
Richard E Desmedt	153	½ - ½
Sean O McDonald	176	0 - 1
Anthony Perry	112	1 - 0
Peter Dawson	122	1 - 0
Ismet Berisha	143	0 - 1
Alexandru Zimleanschi	136	½ - ½

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

106 = (2926 + 400 * (6 - 8)) / 20)