Wins
4
Indexed tournament wins
Player record
Sperberg, John
Losses
8
Indexed tournament losses
Matches
12
Decisive results
Win rate
33.3%
Across indexed matches
Peak rating
662
Highest rating in the available history.
Biggest upset
Not enough data
No qualifying upset available.
Biggest loss
Sweeney, Liam
2014 Minnesota Open · Apr 19, 2014 · -132 rating
Open →Most frequent opponent
Andrea Pietila
1 match
Open →Rating trajectory
Published rating movement across recorded events.
Tournament history
2 tournament appearances · synced Aug 8, 2026, 2:23 AM
| Date | Tournament | Rating in | Rating after | Points changed | Record |
|---|---|---|---|---|---|
| Apr 19, 2014 | 2014 Minnesota OpenTournament · View matches | 646 | 662 | +16+22 / -6 | 4W / 4L |
| Jan 26, 2014 | 2014 Minnesota State ChampionshipsTournament · View matches · Initial rating 646 | Unrated | 646 | — | 0W / 4L |
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