Grzegorz Joniak vs Konrad Sierpowicz
Grzegorz Joniak (27, POL) and Konrad Sierpowicz (27, POL) have never met in classical OTB, but played 27 rapid/blitz games on record. They share 31 common opponents with at least 3 games each side, providing a calibration of relative strength. With current classical ratings of 1566 and 1608, the Elo model gives Sierpowicz a 42% chance of winning a classical game with white.
Head-to-Head Score
If they played today · Classical
Based on current Elo: 1566 vs 1608 (Δ -42)
With Grzegorz Joniak as white
40% Grzegorz19% draw42% Konrad
With Konrad Sierpowicz as white
31% Grzegorz16% draw53% Konrad
Estimate from Elo only · doesn't account for recent form, opening prep, or context.
Career Compare
| Grzegorz Joniak | Konrad Sierpowicz | |
|---|---|---|
| Current rating (STD) | 1566 | 1608 |
| Peak rating | 1566 · Mar 2024 | 1608 · Mar 2024 |
| Peak age | 25 | 25 |
| World rank now | #133,483 | #124,194 |
| World rank peak | #91,771 | #101,421 |
| Federation rank now | #3,340 | #3,025 |
| Games (career, STD) | 85 | 114 |
| Months active | 157 | 128 |
| % white wins | 23% | 21% |
| % black wins | 19% | 20% |
| TPR last 12m (STD) | — | — |
| Activity 12m (games) | 26 | 0 |
Best Win
Grzegorz Joniak
Konrad Sierpowicz
Highest-rated opponent ever beaten · STD primary, rapid/blitz for context
All Meetings (27)
Common Opponents
Tournaments Both Played
Cohort Position
Each player compared to active peers (same federation, ±75 Elo, played in last 12 months).
Grzegorz Joniak
Konrad Sierpowicz