Wins
2
Indexed tournament wins
Player record
Koo, Justin
Losses
23
Indexed tournament losses
Matches
25
Decisive results
Win rate
8.0%
Across indexed matches
Peak rating
723
Highest rating in the available history.
Biggest upset
Jin, Shuo
University of Maryland Open · Nov 4, 2018 · +291 rating
Open →Biggest loss
Jeng, Gloria
2019 MDTTC February Open · Feb 9, 2019 · -406 rating
Open →Most frequent opponent
Charlie Lapkoff
2 matches
Open →Rating trajectory
Published rating movement across recorded events.
Tournament history
5 tournament appearances · synced Aug 12, 2026, 2:40 AM
| Date | Tournament | Rating in | Rating after | Points changed | Record |
|---|---|---|---|---|---|
| Feb 9, 2019 | 2019 MDTTC February OpenTournament · View matches | 696 | 644 | -52+0 / -52 | 1W / 2L |
| Jan 5, 2019 | HCTT CircuitTournament · View matches | 723 | 696 | -27+0 / -27 | 0W / 4L |
| Nov 4, 2018 | University of Maryland OpenTournament · View matches | 691 | 723 | +32 | 1W / 8L |
| Oct 13, 2018 | Butterfly MDTTC October OpenTournament · View matches | 697 | 691 | -6+0 / -6 | 0W / 2L |
| Aug 18, 2018 | Butterfly MDTTC August OpenTournament · View matches · Initial rating 697 | Unrated | 697 | — | 0W / 7L |
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