O'Sullivan, Oisin
Identity
- Title
- —
- Gender
- M
- Year of birth
- 2000
- Federation
- Ireland
- FIDE ID
- 2518082
- National ID
- 19592
- FIDE (STD)
- 1721
- National (STD)
- 1787
- Peak FIDE
- 1721 (2026)
- Peak National
- 1787 (2026)
Tournament rating snapshot: Aug. 23, 2026
Tournament status
Rank:
17
(initial)
→
11
(final)
(+6 ▲)
| Played | W | D | L | Score | |
|---|---|---|---|---|---|
| 1 | 1 | 0 | 0 | 1 | |
| 2 | 1 | 0 | 1 | 1 | |
| Total | 3 | 2 | 0 | 1 | 2 |
| Performance | Played | Score | Opp. avg | TPR | Xp | +/− |
|---|---|---|---|---|---|---|
| FIDE | 3 | 2 | 1760 | 1885 | 1.33 | 1+ |
| National | 3 | 2 | 1747 | 1872 | 1.67 | 1+ |
Games
| Rd | Bd | Col | Opponent | Fed | Score | FIDE | National | TB1 | TB2 | TB3 | TB4 | ||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Rating | Xp | Δ | Rating | Xp | Δ | ||||||||||
| 1 | 10 | Brito, Franco | IRL | 1 | 1785 | 0.409 | +11.82 | 1767 | 0.529 | +11.31 | 1.00 | 2.00 | — | — | |
| 2 | 10 | McCarthy, Ben | IRL | 0 | 1791 | 0.401 | -8.01 | 1731 | 0.580 | -13.92 | — | 0.00 | — | — | |
| 3 | 9 | Kelly, Ronan | IRL | 1 | 1704 | 0.524 | +9.51 | 1743 | 0.563 | +10.49 | — | 0.50 | — | — | |
| Σ / μ | Σ 2 | μ 1760 | Σ 1.33 | Σ +13.32 | μ 1747 | Σ 1.67 | Σ +7.88 | 2.50 | 1.00 | 1760.00 | |||||
TB1: Direct Encounter (DE)
TB2: Sonneborn-Berger (SB)
TB3: Koya System (KS)
TB4: Average Rating of Opponents (ARO)