Wins
12
Indexed tournament wins
Player record
Ma, Sun (Josh)
Losses
3
Indexed tournament losses
Matches
15
Decisive results
Win rate
80.0%
Across indexed matches
Peak rating
1,351
Highest rating in the available history.
Biggest upset
Not enough data
No qualifying upset available.
Biggest loss
Roberts, Harold
82nd Annual NJ State Championships · Apr 17, 2011 · -463 rating
Open →Most frequent opponent
Chan, Brian
1 match
Open →Rating trajectory
Published rating movement across recorded events.
Tournament history
2 tournament appearances · synced Aug 13, 2026, 2:27 AM
| Date | Tournament | Rating in | Rating after | Points changed | Record |
|---|---|---|---|---|---|
| Apr 17, 2011 | 82nd Annual NJ State ChampionshipsTournament · View matches | 1,351 | 1,333 | -18+12 / -30 | 5W / 3L |
| Sep 26, 2010 | NJTTC 2010 September OpenTournament · View matches · Initial rating 1,351 | Unrated | 1,351 | — | 7W / 0L |
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