Prepare against Jonathan O'Connor
Ireland · World #10,681 classical · FIDE ID 2501112
When preparing against Jonathan O'Connor, expect 1.e4 in 58% of White games. Against 1.e4 the reply is 1...e5 (41% of games); against 1.d4, 1...Nf6 (60%).
Our database contains 215 games by Jonathan O'Connor, covering Apr 2003 to Aug 2026. Below you'll find Jonathan O'Connor's most-played openings with White and Black, career performance record, notable wins and top events — everything you need to scout Jonathan O'Connor before a game. You can open the same data in the free interactive preparation workstation, which builds a move-by-move opening tree from every game.
Ratings
| Time control | Current | Peak | Peak date |
|---|---|---|---|
| Classical | 2,159 | 2,242 | Aug 2018 |
| Rapid | 2,118 | 2,193 | May 2024 |
| Blitz | 2,128 | 2,154 | Oct 2013 |
Performance record
| Split | Games | Wins | Draws | Losses | Win rate |
|---|---|---|---|---|---|
| Overall | 215 | 76 | 63 | 76 | 35.3% |
| As White | 110 | 51 | 28 | 31 | 46.4% |
| As Black | 105 | 25 | 35 | 45 | 23.8% |
Move-by-move preparation stats
Straight from the preparation tree built over all of Jonathan O'Connor's games — the same tree the interactive prep board lets you walk to any depth. Scores are from Jonathan O'Connor's side.
First moves as White (110 games)
| Move | Games | Share | Player score |
|---|---|---|---|
| e4 | 64 | 58.2% | 53.1% |
| d4 | 37 | 33.6% | 63.5% |
| Nf3 | 8 | 7.3% | 81.3% |
| g3 | 1 | 0.9% | 100.0% |
Main lines as White
- 1.e4 — 58% of White games, 53.1% score
- …c5 (42% of these games) — O'Connor usually continues Nf3 (43.8% score)
- …e5 (23% of these games) — O'Connor usually continues Nf3 (78.6% score)
- …e6 (19% of these games) — O'Connor usually continues d4 (45.5% score)
- 1.d4 — 34% of White games, 63.5% score
- …Nf6 (49% of these games) — O'Connor usually continues c4 (60.0% score)
- …d5 (35% of these games) — O'Connor usually continues c4 (80.0% score)
- …e6 (8% of these games) — O'Connor usually continues g3 (100.0% score)
As Black against 1.e4 (39 games)
| Move | Games | Share | Player score |
|---|---|---|---|
| e5 | 16 | 41.0% | 37.5% |
| e6 | 15 | 38.5% | 36.7% |
| c5 | 6 | 15.4% | 25.0% |
| d6 | 1 | 2.6% | 50.0% |
| d5 | 1 | 2.6% | 0.0% |
As Black against 1.d4 (48 games)
| Move | Games | Share | Player score |
|---|---|---|---|
| Nf6 | 29 | 60.4% | 41.4% |
| d5 | 8 | 16.7% | 43.8% |
| c5 | 6 | 12.5% | 33.3% |
| f5 | 3 | 6.3% | 66.7% |
| e6 | 2 | 4.2% | 25.0% |
Jonathan O'Connor's chess games
All 215 games by Jonathan O'Connor in the Chess.ceo database (Apr 2003 - Aug 2026) are free to browse, search and replay: filter by opening, opponent, event or date on the player page, or step through any game on the analysis board. Record: 76 wins, 63 draws, 76 losses.
Openings as White
| ECO | Opening | Games | W/D/L | Win rate |
|---|---|---|---|---|
| B22 | Sicilian: Smith-Morra Gambit | 7 | 4/1/2 | 57.1% |
| B22 | Sicilian: Alapin | 6 | 1/5/0 | 16.7% |
| C18 | French: Winawer Variation | 6 | 1/3/2 | 16.7% |
| A11 | Réti Opening | 5 | 2/3/0 | 40.0% |
| C00 | Sicilian | 5 | 1/1/3 | 20.0% |
| C02 | French: Advance Variation | 5 | 2/1/2 | 40.0% |
| A46 | Indian Defense | 5 | 2/2/1 | 40.0% |
| B23 | Sicilian: Closed | 5 | 1/0/4 | 20.0% |
| E46 | Nimzo-Indian: Rubinstein System | 5 | 3/0/2 | 60.0% |
| D23 | Slav Defense | 5 | 1/3/1 | 20.0% |
Openings as Black
| ECO | Opening | Games | W/D/L | Win rate |
|---|---|---|---|---|
| A43 | Benoni Defense | 8 | 2/2/4 | 25.0% |
| C06 | French: Tarrasch Variation | 7 | 1/2/4 | 14.3% |
| A48 | Indian Defense | 7 | 3/1/3 | 42.9% |
| C18 | French: Winawer Variation | 6 | 2/1/3 | 33.3% |
| E71 | King's Indian Defense | 5 | 0/1/4 | 0.0% |
| E32 | Nimzo-Indian: Classical Variation | 5 | 0/1/4 | 0.0% |
| A84 | Semi-Slav Defense | 4 | 2/0/2 | 50.0% |
| C77 | Ruy Lopez: Morphy Defense | 4 | 0/3/1 | 0.0% |
| A80 | Dutch Defense | 3 | 2/0/1 | 66.7% |
| D87 | Grünfeld Defense | 3 | 1/2/0 | 33.3% |
Notable wins
| Date | Opponent | Elo | Event | ECO |
|---|---|---|---|---|
| Oct 2004 | Mikael Agopov | 2,393 | 20th EU-Cup | C18 |
| Sep 2001 | Marc Dutreeuw | 2,390 | 17th EU-Cup | C18 |
| Jan 1999 | Colm Daly | 2,365 | ch-IRL | A28 |
| Jan 1999 | Stephen Brady | 2,320 | ch-IRL | A48 |
| Aug 2019 | Henry Li | 2,287 | ch-IRL | C00 |
Top events
| Event | Year | Games | Score | TPR |
|---|---|---|---|---|
| ch-IRL | 2020 | 49 | 25 | 2,158 |
| Guernsey Holiday Open | 2009 | 25 | 10.5 | 1,382 |
| ch-IRL 102nd | 2023 | 9 | 6 | 2,284 |
| ch-IRL Seniors 50/65 | 2021 | 9 | 6.5 | 2,156 |
| LCU Challengers-B | 1998 | 9 | 6 | 2,292 |
| chT3-BCF 0910 (4NCL) | 2010 | 8 | 3 | 1,643 |
| ch-IRL 100th | 2021 | 8 | 4.5 | 2,010 |
| 20th EU-Cup | 2004 | 7 | 3.5 | 2,262 |
Interactive opening tree from all 215 games, weak-spot detection and engine analysis.
Start preparationFrequently asked questions
Where can I find Jonathan O'Connor's chess games?
215 games by Jonathan O'Connor, from Apr 2003 to Aug 2026, are free to browse and replay move by move — no signup needed. The preparation view groups them into an opening tree showing every line Jonathan O'Connor has played.
What does Jonathan O'Connor play on the first move as White?
Across 110 games with White in our database, Jonathan O'Connor opens with 1.e4 (58% of games), 1.d4 (34% of games), 1.Nf3 (7% of games). Against 1.e4 as Black, Jonathan O'Connor answers 1...e5 (41% of games), 1...e6 (38% of games), 1...c5 (15% of games). Against 1.d4: 1...Nf6 (60% of games), 1...d5 (17% of games), 1...c5 (13% of games).
What openings does Jonathan O'Connor play as White?
As White, Jonathan O'Connor's most-played openings in our database are: Sicilian: Smith-Morra Gambit (7 games, 57.1% win rate); Sicilian: Alapin (6 games, 16.7% win rate); French: Winawer Variation (6 games, 16.7% win rate). The full breakdown of 110 games with White is in the table above.
What openings does Jonathan O'Connor play as Black?
As Black, Jonathan O'Connor most often plays: Benoni Defense (8 games, 25.0% win rate); French: Tarrasch Variation (7 games, 14.3% win rate); Indian Defense (7 games, 42.9% win rate). See the table above for the top ten Black openings across 105 games.
What is Jonathan O'Connor's FIDE rating?
Jonathan O'Connor is currently rated 2,159 in classical chess, 2,118 in rapid and 2,128 in blitz. Peak classical rating: 2,242 (Aug 2018).
How many games has Jonathan O'Connor played?
Our database contains 215 games by Jonathan O'Connor, covering Apr 2003 to Aug 2026. Overall record: 76 wins, 63 draws, 76 losses (35.3% win rate).
How do I prepare against Jonathan O'Connor?
215 games by Jonathan O'Connor reveal their opening repertoire, most-played lines, and the variations where they score worst — the raw material for targeted preparation. The interactive opening tree lets you walk every line to any depth.