Wins
1,836
Indexed tournament wins
Player record
Mark Berg
Losses
1,484
Indexed tournament losses
Matches
3,320
Decisive results
Win rate
55.3%
Across indexed matches
Peak rating
2,037
Highest rating in the available history.
Biggest upset
Wai M. Wong
2026 USATT Northeast Regional Championships · May 16, 2026 · +576 rating
Open →Biggest loss
Kastner, Frankz
NYTTF October Open · Oct 5, 2008 · -1189 rating
Open →Most frequent opponent
Robert Spitzer
32 matches
Open →Rating trajectory
Published rating movement across recorded events.
Tournament history
413 tournament appearances · synced Aug 9, 2026, 3:08 PM
| Date | Tournament | Rating in | Rating after | Points changed | Record |
|---|---|---|---|---|---|
| Feb 28, 2010 | 2010 BTTC OpenTournament · View matches | 1,912 | 1,918 | +6+26 / -20 | 7W / 3L |
| Feb 21, 2010 | NJTTC February OpenTournament · View matches | 1,989 | 1,912 | -77+0 / -77 | 2W / 3L |
| Dec 6, 2009 | NYTTF OpenTournament · View matches | 2,012 | 1,989 | -23+8 / -31 | 3W / 4L |
| Nov 29, 2009 | 2009 JOOLA N. American Teams OTournament · View matches | 1,861 | 2,012 | +151 | 9W / 9L |
| Nov 15, 2009 | Brooklyn TTC November OpenTournament · View matches | 1,875 | 1,861 | -14+9 / -23 | 3W / 4L |
| Oct 25, 2009 | Brooklyn TTC October OpenTournament · View matches | 1,917 | 1,875 | -42+11 / -53 | 5W / 4L |
| Oct 11, 2009 | NJTTC October OpenTournament · View matches | 1,922 | 1,917 | -5 | 5W / 2L |
| Sep 27, 2009 | 2nd Brooklyn Polytechnic OpenTournament · View matches | 1,929 | 1,922 | -7+9 / -16 | 6W / 2L |
| Sep 20, 2009 | Brooklyn TTC September OpenTournament · View matches | 1,961 | 1,929 | -32+9 / -41 | 4W / 4L |
| Sep 13, 2009 | NJTTC September 2009 OpenTournament · View matches | 1,964 | 1,961 | -3+8 / -11 | 7W / 2L |
| Sep 6, 2009 | 2009 SpinmaniaTournament · View matches | 1,915 | 1,964 | +49+61 / -12 | 9W / 4L |
| Aug 16, 2009 | Brooklyn TTC OpenTournament · View matches | 1,927 | 1,915 | -12+8 / -20 | 3W / 1L |
| Jul 19, 2009 | Brooklyn TTC July OpenTournament · View matches | 1,938 | 1,927 | -11+28 / -39 | 6W / 4L |
| Jun 13, 2009 | 6th Dr. Zhi Yu - Everbright CuTournament · View matches | 1,945 | 1,938 | -7+6 / -13 | 5W / 2L |
| Jun 6, 2009 | 2009 Manor Church Giant RR U-2Tournament · View matches | 1,948 | 1,945 | -3+18 / -21 | 9W / 3L |
| May 24, 2009 | 2009 SpinathonTournament · View matches · USATT readjusted 1,870 → 1,923 | 1,870 | 1,948 | +25+42 / -17 | 12W / 4L |
| May 17, 2009 | NJTTC May OpenTournament · View matches | 1,868 | 1,870 | +2+8 / -6 | 6W / 2L |
| May 10, 2009 | Brooklyn TTC May OpenTournament · View matches | 1,825 | 1,868 | +43+45 / -2 | 3W / 3L |
| May 3, 2009 | NYTT May OpenTournament · View matches | 1,831 | 1,825 | -6+0 / -6 | 1W / 2L |
| Mar 29, 2009 | NYTTF March OpenTournament · View matches | 1,851 | 1,831 | -20+1 / -21 | 2W / 4L |