Wins
66
Indexed tournament wins
Player record
Yam, Bosco
Losses
52
Indexed tournament losses
Matches
118
Decisive results
Win rate
55.9%
Across indexed matches
Peak rating
1,752
Highest rating in the available history.
Biggest upset
William Y. Wong
Sacramento Summer Open · Aug 27, 2016 · +439 rating
Open →Biggest loss
Che, Tiger
California State Championship · May 6, 2016 · -602 rating
Open →Most frequent opponent
Jose Fernandez
3 matches
Open →Rating trajectory
Published rating movement across recorded events.
Tournament history
24 tournament appearances · synced Aug 9, 2026, 2:19 AM
| Date | Tournament | Rating in | Rating after | Points changed | Record |
|---|---|---|---|---|---|
| Aug 24, 2019 | 2019 Ultimate Fieldhouse August OpenTournament · View matches | 1,752 | 1,740 | -12 | 4W / 4L |
| Apr 20, 2019 | 2019 Ultimate Fieldhouse April OpenTournament · View matches · USATT readjusted 1,585 → 1,732 | 1,585 | 1,752 | +20+40 / -20 | 7W / 3L |
| Mar 1, 2019 | 2019 Butterfly Ultimate Fieldhouse March OpenTournament · View matches · USATT readjusted 1,402 → 1,540 | 1,402 | 1,585 | +45+75 / -30 | 3W / 2L |
| Apr 8, 2017 | 2017 Alameda Spring OpenTournament · View matches | 1,398 | 1,402 | +4+35 / -31 | 1W / 3L |
| Oct 29, 2016 | Sacramento Fall Fun For All OpenTournament · View matches | 1,356 | 1,398 | +42+43 / -1 | 2W / 2L |
| Aug 27, 2016 | Sacramento Summer OpenTournament · View matches · USATT readjusted 1,058 → 1,253 | 1,058 | 1,356 | +103+148 / -45 | 8W / 1L |
| May 6, 2016 | California State ChampionshipTournament · View matches | 1,088 | 1,058 | -30+50 / -80 | 1W / 5L |
| Apr 15, 2016 | 2016 Fremont Table Tennis Spring OpenTournament · View matches | 1,188 | 1,088 | -100+0 / -100 | 0W / 3L |
| Mar 12, 2016 | 2016 Sacramento Winter OpenTournament · View matches | 1,194 | 1,188 | -6+9 / -15 | 3W / 3L |
| Dec 6, 2015 | ICC STIGA California OpenTournament · View matches | 1,202 | 1,194 | -8+2 / -10 | 1W / 1L |
| Nov 12, 2015 | 2015 Fall Fremont Table Tennis Academy OpenTournament · View matches | 1,257 | 1,202 | -55 | 1W / 2L |
| Nov 7, 2015 | Sacramento Fall OpenTournament · View matches | 1,248 | 1,257 | +9+17 / -8 | 3W / 2L |
| Sep 26, 2015 | Sacramento September OpenTournament · View matches | 1,256 | 1,248 | -8+0 / -8 | 0W / 2L |
| Sep 27, 2009 | 2009 Bellevue Fall OpenTournament · View matches | 1,267 | 1,256 | -11+0 / -11 | 0W / 5L |
| Dec 10, 2006 | Nationals Warm-Up TourneyTournament · View matches | 1,302 | 1,267 | -35+0 / -35 | 1W / 1L |
| Aug 21, 2005 | San Francisco Summer OpenTournament · View matches | 1,289 | 1,302 | +13 | 3W / 2L |
| Aug 6, 2005 | Sacramento Summer OpenTournament · View matches | 1,290 | 1,289 | -1+0 / -1 | 0W / 2L |
| Jun 12, 2005 | Golden State OpenTournament · View matches | 1,273 | 1,290 | +17+30 / -13 | 1W / 1L |
| Apr 30, 2005 | Sacramento Spring OpenTournament · View matches | 1,167 | 1,273 | +106 | 2W / 1L |
| Oct 2, 2004 | Sacramento October OpenTournament · View matches | 970 | 1,167 | +197 | 9W / 2L |
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