Ladia Jirasek vs Derek Oconnor
Ladia Jirasek (26, IM, USA) and Derek Oconnor (33, USA) have met 12 times in classical OTB. Jirasek leads with 7 wins to 2, with 3 draws — a 25% draw rate. Their last meeting at 2019 Berkeley Open saw Oconnor prevail. With current classical ratings of 2361 and 2280, the Elo model gives Jirasek a 56% chance of winning a classical game with white.
Head-to-Head Score
If they played today · Classical
Based on current Elo: 2361 vs 2280 (Δ +81)
With Ladia Jirasek as white
56% Ladia21% draw23% Derek
With Derek Oconnor as white
44% Ladia25% draw31% Derek
Estimate from Elo only · doesn't account for recent form, opening prep, or context.
Career Compare
| Ladia Jirasek | Derek Oconnor | |
|---|---|---|
| Current rating (STD) | 2361 | 2280 |
| Peak rating | 2383 · Feb 2020 | 2280 · Jun 2019 |
| Peak age | 20 | 26 |
| World rank now | #2,653 | #5,548 |
| World rank peak | #2,530 | #5,469 |
| Federation rank now | #114 | #191 |
| Games (career, STD) | 398 | 384 |
| Months active | 155 | 121 |
| % white wins | 65% | 58% |
| % black wins | 56% | 56% |
| TPR last 12m (STD) | — | — |
| Activity 12m (games) | 20 | 0 |
Best Win
Ladia Jirasek
Derek Oconnor
Highest-rated opponent ever beaten · STD primary, rapid/blitz for context
All Meetings (12)
Common Opponents
Tournaments Both Played
Cohort Position
Each player compared to active peers (same federation, ±75 Elo, played in last 12 months).
Ladia Jirasek
Derek Oconnor