Wins
169
Indexed tournament wins
Player record
Jonathan Lo
Losses
109
Indexed tournament losses
Matches
278
Decisive results
Win rate
60.8%
Across indexed matches
Peak rating
1,947
Highest rating in the available history.
Biggest upset
Gordon Cochran
2005 IN State Open Championshi · Aug 14, 2005 · +310 rating
Open →Biggest loss
Andre Khailo
Rockford Spring Open 2005 · Apr 16, 2005 · -412 rating
Open →Most frequent opponent
Scott Dalton
6 matches
Open →Rating trajectory
Published rating movement across recorded events.
Tournament history
30 tournament appearances · synced Aug 26, 2026, 2:23 AM
| Date | Tournament | Rating in | Rating after | Points changed | Record |
|---|---|---|---|---|---|
| Aug 12, 2006 | Schaumburg Summer OpenTournament · View matches | 1,928 | 1,918 | -10+0 / -10 | 4W / 2L |
| Apr 15, 2006 | Rockford Spring OpenTournament · View matches | 1,947 | 1,928 | -19+6 / -25 | 4W / 4L |
| Dec 11, 2005 | Holiday OpenTournament · View matches | 1,942 | 1,947 | +5+10 / -5 | 6W / 3L |
| Nov 12, 2005 | $499 U-2300 Open RR TournTournament · View matches | 1,864 | 1,942 | +78 | 5W / 3L |
| Oct 23, 2005 | Highland OpenTournament · View matches | 1,863 | 1,864 | +1+2 / -1 | 2W / 3L |
| Aug 27, 2005 | Schaumburg August OpenTournament · View matches | 1,826 | 1,863 | +37 | 6W / 4L |
| Aug 14, 2005 | 2005 IN State Open ChampionshiTournament · View matches · USATT readjusted 1,707 → 1,771 | 1,707 | 1,826 | +55+61 / -6 | 4W / 4L |
| Jul 2, 2005 | CTTC Independence Day OpenTournament · View matches | 1,715 | 1,707 | -8+27 / -35 | 9W / 1L |
| May 22, 2005 | St. Joseph Valley OpenTournament · View matches | 1,693 | 1,715 | +22+26 / -4 | 7W / 2L |
| Apr 16, 2005 | Rockford Spring Open 2005Tournament · View matches | 1,725 | 1,693 | -32+3 / -35 | 7W / 2L |
| Apr 2, 2005 | Primo's Farewell OpenTournament · View matches · USATT readjusted 1,505 → 1,697 | 1,505 | 1,725 | +28+41 / -13 | 8W / 1L |
| Oct 17, 2004 | Highland OpenTournament · View matches | 1,492 | 1,505 | +13+18 / -5 | 3W / 3L |
| Sep 25, 2004 | Schaumburg OpenTournament · View matches | 1,504 | 1,492 | -12+17 / -29 | 3W / 5L |
| Aug 1, 2004 | Junior Olympics/NationalsTournament · View matches | 1,501 | 1,504 | +3+3 / 0 | 5W / 6L |
| Jul 4, 2004 | US OpenTournament · View matches | 1,493 | 1,501 | +8 | 3W / 2L |
| Jun 26, 2004 | Schaumburg US Open Tune-up RR Tournament · View matches | 1,440 | 1,493 | +53+71 / -18 | 7W / 3L |
| Jun 5, 2004 | Glenview June TournamentTournament · View matches | 1,432 | 1,440 | +8+14 / -6 | 10W / 1L |
| May 16, 2004 | 40th St. Joseph Valley OpenTournament · View matches | 1,476 | 1,432 | -44+12 / -56 | 5W / 3L |
| Apr 17, 2004 | Rockford Spring OpenTournament · View matches | 1,460 | 1,476 | +16+20 / -4 | 2W / 4L |
| Apr 10, 2004 | Schaumburg OpenTournament · View matches · USATT readjusted 1,369 → 1,423 | 1,369 | 1,460 | +37+44 / -7 | 4W / 5L |
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