Istvan Sipos vs Gergely Aczel
Istvan Sipos (39, IM, HUN) and Gergely Aczel (35, GM, HUN) have met 10 times in classical OTB. Aczel leads with 3 wins to 2, with 5 draws — a 50% draw rate. Their last meeting at 1. liga Zapad 2025 2026 R7 drew. With current classical ratings of 2405 and 2442, the Elo model gives Aczel a 36% chance of winning a classical game with white.
Head-to-Head Score
If they played today · Classical
Based on current Elo: 2405 vs 2442 (Δ -37)
With Istvan Sipos as white
35% Istvan29% draw36% Gergely
With Gergely Aczel as white
28% Istvan24% draw48% Gergely
Estimate from Elo only · doesn't account for recent form, opening prep, or context.
Career Compare
| Istvan Sipos | Gergely Aczel | |
|---|---|---|
| Current rating (STD) | 2405-10 | 2442+5 |
| Peak rating | 2504 · Apr 2015 | 2573 · Nov 2017 |
| Peak age | 28 | 26 |
| World rank now | #1,583 | #1,110 |
| World rank peak | #728 | #331 |
| Federation rank now | #43 | #30 |
| Games (career, STD) | 930 | 1,929 |
| Months active | 218 | 207 |
| % white wins | 51% | 58% |
| % black wins | 42% | 46% |
| TPR last 12m (STD) | 2326 | 2444 |
| Activity 12m (games) | 31 | 191 |
Best Win
Istvan Sipos
Gergely Aczel
Highest-rated opponent ever beaten · STD primary, rapid/blitz for context
All Meetings (10)
Common Opponents
Tournaments Both Played
Cohort Position
Each player compared to active peers (same federation, ±75 Elo, played in last 12 months).
Istvan Sipos
Gergely Aczel