The Matrix Open V
14 players participated in this 5-round tournament, held from 19 Sept 2025 to 21 Sept 2025 in Delray Beach, FL, United States. 4 titled players from 3 federations. Top 10 Elo average was 2058, and top seed was Yaacov Norowitz (🇺🇸 USA, IM, 2400).
Jacorey Bynum (🇺🇸 USA, 2105) won with 3.5/5, ahead of Theodore Slade (3.0) and Yaacov Norowitz (3.0). Bynum broke clear in the final round.
The biggest upset came in round 4: Maxwell Yang (CM, 1944) beat Mel Goss (2132), a +188-point gap.
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How it unfolded
Top 6 · 5 roundsJacorey Bynum led from R5; +0.5-point edge over the runner-up. Title race converged from 2 co-leaders at R4 to 1 by R5.
Jacorey Bynum held the sole lead from R5 through R5 without losing it.
Jacorey Bynum drew with IM Yaacov Norowitz (White).
Jacorey Bynum went unbeaten across 5 games (R1–R5).
Key matchups · top 4
Head-to-head between the four finishers| Player | 1 | 2 | 3 | 4 |
|---|---|---|---|---|
| 1Jacorey Bynum | * | ½ | ½ | — |
| 2IMYaacov Norowitz | ½ | * | ½ | 1 |
| 3Theodore Slade | ½ | ½ | * | 0 |
| 4Miguel Fonseca | — | 0 | 1 | * |
Grille américaine
| # | Player | Elo | Fed | R1 | R2 | R3 | R4 | R5 | Pts | Bu C1 | Bu | SB | Perf | Δ |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Bynum, Jacorey | 2105 | USA | +11N | =2B | =7N | +8B | =3B | 3.5 | 10.0 | 11.0 | 7.00 | 2230 | +32.8 |
| 2 | Slade, Theodore | 2178 | ENG | +5B | =1N | =3B | +7N | −4N | 3.0 | 11.5 | 13.5 | 7.75 | 2131 | -4.4 |
| 3 | Norowitz, YaacovIM | 2400 | USA | F | +14B | =2N | +4B | =1N | 3.0 | 9.0 | 9.0 | 5.75 | 2264 | -4.7 |
| 4 | Fonseca, Miguel | 1991 | USA | F | =9N | +6B | −3N | +2B | 2.5 | 10.0 | 10.0 | 6.25 | 2256 | +25.6 |
| 5 | Marian, Aaron | 1866 | USA | −2N | −11B | +12B | +10N | =8N | 2.5 | 7.5 | 8.5 | 3.50 | 1957 | +22.0 |
| 6 | Yang, MaxwellCM | 1944 | USA | F | +10B | −4N | +9N | =7B | 2.5 | 7.5 | 7.5 | 4.00 | 2092 | +31.2 |
| 7 | Xu, Zhihan (samuel)CM | 1934 | CAN | F | +13N | =1B | −2B | =6N | 2.0 | 10.0 | 10.0 | 4.00 | 2030 | +17.3 |
| 8 | Sha, YiCM | 1879 | USA | F | +12N | =9B | −1N | =5B | 2.0 | 8.5 | 8.5 | 3.00 | 1970 | +17.2 |
| 9 | Goss, Mel | 2132 | USA | =10N | =4B | =8N | −6B | F | 1.5 | 8.5 | 8.5 | 3.00 | 1850 | -30.0 |
| 10 | Lopez, Aldo F | 1931 | USA | =9B | −6N | +11N | −5B | −12N | 1.5 | 7.5 | 8.5 | 1.75 | 1798 | -18.0 |
| 11 | Yisrael, Shama | 2014 | USA | −1B | +5N | −10B | −13N | F | 1.0 | 8.5 | 8.5 | 2.50 | 1755 | -27.2 |
| 12 | de la Torre, Olivio Luis | 1779 | USA | F | −8B | −5N | F | +10B | 1.0 | 6.0 | 6.0 | 1.50 | 1767 | -1.6 |
| 13 | Catlin, Andrew | 1892 | USA | F | −7B | F | +11B | F | 1.0 | 3.0 | 3.0 | 1.00 | 1974 | +4.6 |
| 14 | Wilson, Otis | 1949 | USA | F | −3N | F | F | F | 0.0 | 3.0 | 3.0 | 0.00 | 1549 | -1.6 |
Key insights
Biggest movers and upsets — the story behind the numbers.
- 1Bynum, JacoreyUSA+32.83.5 pts · #1
- 2Yang, MaxwellCMUSA+31.22.5 pts · #5
- 3Fonseca, MiguelUSA+25.62.5 pts · #4
- 1Goss, MelUSA-30.01.5 pts · #10
- 2Yisrael, ShamaUSA-27.21.0 pts · #12
- 3Lopez, Aldo FUSA-18.01.5 pts · #9
- R4+188 Elo gap
- R5+187 Elo gap
- R5+152 Elo gap