Event: Online League Division 1 (Winter 2021)

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Opponent	Rating	Result
Rajat Makkar	2232	0 - 1
Tanmay Chopra	2405	0 - 1
Peter Hasson	2041	0 - 1
David W Gostelow	1947	½ - ½
Andrew Macleod	1623	1 - 0
Seshagiri Vaddadi	2053	1 - 0(def)

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

1890 = (10248 + 400 * (1 - 3)) / 5)