Michal Mazurkiewicz vs Marcin Sieciechowicz
Michal Mazurkiewicz (37, CM, POL) and Marcin Sieciechowicz (34, IM, POL) have never met in classical OTB, but played 13 rapid/blitz games on record. They share 78 common opponents with at least 3 games each side, providing a calibration of relative strength. With current classical ratings of 2304 and 2386, the Elo model gives Sieciechowicz a 44% chance of winning a classical game with white.
Head-to-Head Score
If they played today · Classical
Based on current Elo: 2304 vs 2386 (Δ -82)
With Michal Mazurkiewicz as white
31% Michal25% draw44% Marcin
With Marcin Sieciechowicz as white
23% Michal21% draw56% Marcin
Estimate from Elo only · doesn't account for recent form, opening prep, or context.
Career Compare
| Michal Mazurkiewicz | Marcin Sieciechowicz | |
|---|---|---|
| Current rating (STD) | 2304 | 2386+3 |
| Peak rating | 2304 · Apr 2026 | 2462 · Jun 2013 |
| Peak age | 37 | 21 |
| World rank now | #3,955 | #1,926 |
| World rank peak | #3,943 | #1,141 |
| Federation rank now | #146 | #75 |
| Games (career, STD) | 190 | 1,296 |
| Months active | 213 | 205 |
| % white wins | 65% | 60% |
| % black wins | 58% | 49% |
| TPR last 12m (STD) | 2341 | 2338 |
| Activity 12m (games) | 72 | 365 |
Best Win
Michal Mazurkiewicz
Marcin Sieciechowicz
Highest-rated opponent ever beaten · STD primary, rapid/blitz for context
All Meetings (13)
Common Opponents
Tournaments Both Played
Cohort Position
Each player compared to active peers (same federation, ±75 Elo, played in last 12 months).
Michal Mazurkiewicz
Marcin Sieciechowicz