Wins
4
Indexed tournament wins
Player record
Jefferson Guo
Losses
14
Indexed tournament losses
Matches
18
Decisive results
Win rate
22.2%
Across indexed matches
Peak rating
1,014
Highest rating in the available history.
Biggest upset
Not enough data
No qualifying upset available.
Biggest loss
Lu, Ming
Westchester October 2018 Open · Oct 27, 2018 · -351 rating
Open →Most frequent opponent
Amoolya Menon
1 match
Open →Rating trajectory
Published rating movement across recorded events.
Tournament history
4 tournament appearances · synced Aug 12, 2026, 3:43 AM
| Date | Tournament | Rating in | Rating after | Points changed | Record |
|---|---|---|---|---|---|
| Sep 14, 2025 | Westford TTC September 2025 TournamentTournament · View matches | 904 | 850 | -54+1 / -55 | 3W / 6L |
| Dec 29, 2023 | Westchester December2023 OpenTournament · View matches | 932 | 904 | -28+0 / -28 | 0W / 3L |
| Oct 27, 2018 | Westchester October 2018 OpenTournament · View matches | 1,014 | 932 | -82+0 / -82 | 0W / 3L |
| Mar 24, 2018 | Westchester March 2018 OpenTournament · View matches · Initial rating 1,014 | Unrated | 1,014 | — | 1W / 2L |
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