Dean Chen vs Jonathan Si Seng Ong
Dean Chen (15, AUS) and Jonathan Si Seng Ong (16, AUS) have met 4 times in classical OTB plus 1 rapid/blitz game. Chen leads the classical series 3–0 (1 draw). With current classical ratings of 1975 and 1716, the Elo model gives Chen a 79% chance of winning a classical game with white.
Head-to-Head Score
If they played today · Classical
Based on current Elo: 1975 vs 1716 (Δ +259)
With Dean Chen as white
79% Dean11% draw10% Jonathan
With Jonathan Si Seng Ong as white
72% Dean13% draw15% Jonathan
Estimate from Elo only · doesn't account for recent form, opening prep, or context.
Career Compare
| Dean Chen | Jonathan Si Seng Ong | |
|---|---|---|
| Current rating (STD) | 1975 | 1716 |
| Peak rating | 1983 · Apr 2026 | 1827 · Nov 2025 |
| Peak age | 15 | 15 |
| World rank now | #31,657 | #103,963 |
| World rank peak | #28,302 | #67,457 |
| Federation rank now | #161 | #679 |
| Games (career, STD) | 370 | 245 |
| Months active | 86 | 52 |
| % white wins | 48% | 46% |
| % black wins | 40% | 37% |
| TPR last 12m (STD) | 1857 | 1476 |
| Activity 12m (games) | 122 | 72 |
Best Win
Dean Chen
Jonathan Si Seng Ong
Highest-rated opponent ever beaten · STD primary, rapid/blitz for context
All Meetings (5)
Common Opponents
Tournaments Both Played
Cohort Position
Each player compared to active peers (same federation, ±75 Elo, played in last 12 months).
Dean Chen
Jonathan Si Seng Ong