Wins
232
Indexed tournament wins
Player record
Sean Koster
Losses
316
Indexed tournament losses
Matches
548
Decisive results
Win rate
42.3%
Across indexed matches
Peak rating
1,907
Highest rating in the available history.
Biggest upset
Connell, Grant
2017 Arizona Open & Giant RR · Feb 18, 2017 · +529 rating
Open →Biggest loss
Shikhare, Rudra
North-West La Open 2** Sanctioned Tournament · Nov 18, 2018 · -601 rating
Open →Most frequent opponent
Mike Burg
13 matches
Open →Rating trajectory
Published rating movement across recorded events.
Tournament history
62 tournament appearances · synced Aug 7, 2026, 8:40 PM
| Date | Tournament | Rating in | Rating after | Points changed | Record |
|---|---|---|---|---|---|
| Jul 25, 2026 | 2026 USATT Arizona State ChampionshipsTournament · View matches | 1,628 | 1,679 | +51+58 / -7 | 6W / 5L |
| Jun 7, 2026 | 2026 TT&M’S BUTTERFLY SUMMER OPENTournament · View matches | 1,646 | 1,628 | -18+1 / -19 | 2W / 5L |
| Apr 11, 2026 | 2026 TT&M BUTTERFLY APRIL OPENOther Sanctioned Tournaments · View matches | 1,662 | 1,646 | -16+2 / -18 | 1W / 5L |
| Jun 6, 2025 | 2025 TT&M Butterfly Summer OpenTournament · View matches | 1,662 | 1,662 | 0+0 / 0 | 0W / 2L |
| Aug 23, 2024 | 2024 TT&M's Butterfly August OpenTournament · View matches | 1,692 | 1,662 | -30+0 / -30 | 3W / 5L |
| Jun 21, 2024 | 2024 TT&M's Butterfly Summer OpenTournament · View matches | 1,746 | 1,692 | -54+0 / -54 | 0W / 3L |
| Mar 22, 2024 | 2024 TT&M's Butterfly March MadnessTournament · View matches | 1,752 | 1,746 | -6+0 / -6 | 0W / 2L |
| Feb 25, 2023 | 2023 Best of the West Open & Giant Round RobinTournament · View matches | 1,787 | 1,752 | -35+0 / -35 | 0W / 2L |
| Dec 10, 2022 | 2022 LA OpenTournament · View matches | 1,838 | 1,787 | -51+0 / -51 | 0W / 3L |
| Dec 3, 2022 | 2022 Valley of the Sun OpenTournament · View matches | 1,840 | 1,838 | -2+16 / -18 | 4W / 3L |
| Nov 18, 2022 | 2022 TT&M's Turkey Butterfly OpenTournament · View matches | 1,879 | 1,840 | -39+7 / -46 | 4W / 7L |
| Jul 30, 2022 | 2022 Arizona State ChampionshipTournament · View matches · USATT readjusted 1,775 → 1,843 | 1,775 | 1,879 | +36+50 / -14 | 2W / 4L |
| Jan 29, 2022 | 2022 TT&M ROYAL RUMBLETournament · View matches | 1,730 | 1,775 | +45+52 / -7 | 5W / 2L |
| Sep 25, 2021 | 2021 Arizona Open & Giant Round RobinTournament · View matches | 1,734 | 1,730 | -4+24 / -28 | 5W / 8L |
| May 23, 2021 | 2021 Arizona State ChampionshipTournament · View matches | 1,694 | 1,734 | +40+40 / 0 | 1W / 2L |
| Mar 22, 2021 | 2021 US National TT Championships Arizona State QualifierTournament · View matches | 1,722 | 1,694 | -28+2 / -30 | 2W / 2L |
| Aug 29, 2020 | 8th Annual Robert Bluestone MemorialTournament · View matches | 1,736 | 1,722 | -14+21 / -35 | 5W / 4L |
| Feb 22, 2020 | 2020 Arizona Open and Giant Round RobinTournament · View matches | 1,743 | 1,736 | -7+4 / -11 | 5W / 3L |
| Jan 26, 2020 | 2020 TT&M Royal RumbleTournament · View matches | 1,745 | 1,743 | -2+8 / -10 | 6W / 2L |
| Dec 7, 2019 | 2019 Valley of the Sun OpenTournament · View matches | 1,753 | 1,745 | -8+2 / -10 | 2W / 4L |
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