Markham True North Open O1900
Open SwissStandard
17 players participated in this 6-round tournament, held from 27 Jun 2025 to 29 Jun 2025 in Markham, Canada. 7 titled players from 3 federations. Top 10 Elo average was 2017, and top seed was Razvan Preotu (🇨🇦 CAN, GM, 2474).
Razvan Preotu (🇨🇦 CAN, GM, 2474) won with 5.0/6, ahead of Mark Plotkin (4.5) and Laksshana Deepak (3.5).
The biggest upset came in round 3: Minh Thong Nguyen (1761) beat Ryan Yunhui Zhong (FM, 2099), a +338-point gap.
Location
🇨🇦Markham, Canada
Dates
27 Jun 2025 → 29 Jun 2025
Time control
Standard: 90 minutes with 30 second increment from move 1
System
Swiss · 6 rounds
Titled players · 7
GM×1
IM×1
FM×2
CM×1
WFM×1
WCM×1
Federations · 3 represented
🇨🇦Canada×15
🇺🇸United States of America×1
🇻🇳Vietnam×1
Top 3
- 🥇
- 🥈
- 🥉
How it unfolded
Top 6 · 6 roundsGM Razvan Preotu led from R3; +0.5-point edge over the runner-up.
Co-leaders
7
2
1
4
1
1
R3–R6 · LEAD HELD
GM Razvan Preotu held the sole lead from R3 through R6 without losing it.
R4 · HEAD-TO-HEAD · WINNER VS 2ND
GM Razvan Preotu drew with IM Mark Plotkin (White).
R1–R6 · UNBEATEN
GM Razvan Preotu went unbeaten across 6 games (R1–R6).
Key matchups · top 4
Head-to-head between the four finishers| Player | 1 | 2 | 3 | 4 |
|---|---|---|---|---|
| 1GMRazvan Preotu | * | ½ | 1 | — |
| 2IMMark Plotkin | ½ | * | 1 | — |
| 3WFMLaksshana Deepak | 0 | 0 | * | — |
| 4FMRyan Yunhui Zhong | — | — | — | * |
Grille américaine
| # | Player | Elo | Fed | R1 | R2 | R3 | R4 | R5 | R6 | Pts | Bu C1 | Bu | SB | Perf | Δ |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Preotu, RazvanGM | 2474 | CAN | +13N | =6B | +3N | =2B | +11N | +4B | 5.0 | 17.0 | 19.0 | 15.25 | 2398 | -2.5 |
| 2 | Plotkin, MarkIM | 2350 | CAN | +8B | +9N | F | =1N | +6B | +3B | 4.5 | 17.5 | 17.5 | 15.00 | 2421 | +4.9 |
| 3 | Deepak, LaksshanaWFM | 1901 | CAN | +10B | +11N | −1B | +14N | =4B | −2N | 3.5 | 18.5 | 20.5 | 9.25 | 2052 | +34.3 |
| 4 | Li, WilliamCM | 2101 | CAN | =12N | +7B | =6N | +8B | =3N | −1N | 3.5 | 17.5 | 19.5 | 10.25 | 1989 | -14.6 |
| 5 | Zhong, Ryan YunhuiFM | 2099 | CAN | F | =12B | −8N | +16B | +10N | +11B | 3.5 | 10.5 | 10.5 | 6.50 | 1907 | -35.6 |
| 6 | Malakar, SaarthakFM | 1887 | CAN | +14B | =1N | =4B | +9N | −2N | F | 3.0 | 18.0 | 18.0 | 9.25 | 2124 | +54.8 |
| 7 | Russell, Wesley | 1823 | CAN | +15B | −4N | =10B | −11N | +9B | =12N | 3.0 | 14.0 | 14.5 | 6.00 | 1828 | 0.0 |
| 8 | Nguyen, Minh Thong | 1761 | VIE | −2N | +16B | +5B | −4N | +14B | F | 3.0 | 13.5 | 13.5 | 5.50 | 2020 | +29.8 |
| 9 | Zhong, April YunweiWCM | 1898 | CAN | +16N | −2B | +12N | −6B | −7N | +15B | 3.0 | 13.0 | 13.0 | 2.50 | 1848 | -19.2 |
| 10 | Chen, Ray | 1719 | CAN | −3N | +17B | =7N | +15B | −5B | =13N | 3.0 | 12.5 | 12.5 | 3.00 | 1812 | +27.2 |
| 11 | Zhang, Daniel | 1871 | CAN | +17N | −3B | =15N | +7B | −1B | −5N | 2.5 | 15.5 | 15.5 | 3.25 | 1838 | -16.0 |
| 12 | Huang, Eric | 1746 | CAN | =4B | =5N | −9B | =13N | F | =7B | 2.0 | 15.0 | 15.0 | 6.00 | 1866 | +24.8 |
| 13 | Mammadov, Nihad | 1770 | CAN | −1B | −14N | F | =12B | +15N | =10B | 2.0 | 12.5 | 12.5 | 3.00 | 1718 | -19.6 |
| 14 | Chang, Eli | 1684 | USA | −6N | +13B | +16N | −3B | −8N | F | 2.0 | 11.5 | 11.5 | 2.00 | 1731 | +11.2 |
| 15 | Ma, Quentin | 1639 | CAN | −7N | F | =11B | −10N | −13B | −9N | 0.5 | 13.5 | 13.5 | 1.25 | 1449 | -34.8 |
| 16 | Patil, Tanishq | 1695 | CAN | −9B | −8N | −14B | −5N | F | F | 0.0 | 11.5 | 11.5 | 0.00 | 1060 | -50.0 |
| 17 | Lau, Jayden | 1640 | CAN | −11B | −10N | F | F | F | F | 0.0 | 9.5 | 9.5 | 0.00 | 993 | -24.4 |
Key insights
Biggest movers and upsets — the story behind the numbers.
Top rating gainers
- 1Malakar, SaarthakFMCAN+54.83.0 pts · #7
- 2Deepak, LaksshanaWFMCAN+34.33.5 pts · #3
- 3Nguyen, Minh ThongVIE+29.83.0 pts · #6
Top rating losers
- 1Patil, TanishqCAN-50.00.0 pts · #16
- 2Zhong, Ryan YunhuiFMCAN-35.63.5 pts · #4
- 3Ma, QuentinCAN-34.80.5 pts · #15
Biggest upsets
- R3+338 Elo gap