| Season | League | Apps | Min | Goals | Assists | G+A / 90 | Rating |
|---|---|---|---|---|---|---|---|
| 2024 | First Division (Ireland) | 3 | 153 | 1 | 0 | 0.59 | — |
| 2025 | Premier Division | 11 | 301 | 0 | 0 | 0 | 6.87 |
| 2026 | Premier Division | 17 | 592 | 0 | 1 | 0.15 | 6.75 |
Domestic league competitions only (SportMonks sub_type='domestic'); national-team, continental and cup competitions are excluded. Classification resolved by league id against the canonical leagues index. G+A/90 computed from minutes actually played.
Figures computed from the GioScore season-stats database · as of 2026-09-05
Player stats against each opponent club
| Team | MP | W | D | L | G | A | ||
|---|---|---|---|---|---|---|---|---|
 Galway United | 4 | 3 | 1 | 0 | 0 | 1 | 0 | 0 |
 Derry City | 4 | 0 | 3 | 1 | 0 | 0 | 1 | 0 |
 Shelbourne | 3 | 1 | 1 | 1 | 0 | 0 | 0 | 0 |
 Sligo Rovers | 3 | 2 | 0 | 1 | 0 | 0 | 1 | 0 |
 St Patrick's | 3 | 2 | 0 | 1 | 0 | 0 | 2 | 0 |
 Waterford United | 3 | 2 | 1 | 0 | 0 | 0 | 0 | 0 |
 Bohemians | 2 | 2 | 0 | 0 | 0 | 0 | 0 | 0 |
 Floriana | 2 | 1 | 0 | 1 | 0 | 0 | 0 | 0 |
 Drogheda United | 2 | 1 | 1 | 0 | 0 | 0 | 0 | 0 |
 Dundalk | 2 | 1 | 0 | 1 | 0 | 0 | 0 | 0 |
 UCD | 2 | 0 | 0 | 2 | 0 | 0 | 0 | 0 |
 Víkingur Reykjavík | 2 | 1 | 1 | 0 | 0 | 0 | 0 | 0 |
 Egnatia Rrogozhinë | 2 | 1 | 0 | 1 | 0 | 0 | 0 | 0 |
 Ararat-Armenia | 2 | 1 | 0 | 1 | 0 | 0 | 0 | 0 |
 Cork City | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 |
 Finn Harps | 1 | 1 | 0 | 0 | 1 | 0 | 0 | 0 |
 Athlone Town | 1 | 1 | 0 | 0 | 0 | 0 | 1 | 0 |
 Sparta Praha | 1 | 0 | 0 | 1 | 0 | 0 | 0 | 0 |
 Wexford Youths | 1 | 0 | 1 | 0 | 0 | 0 | 0 | 0 |
 Treaty United | 1 | 1 | 0 | 0 | 0 | 0 | 1 | 0 |
John O'Sullivan finished the 2026 Premier Division season with 1 assist and no goals from 17 appearances (592 minutes) — 0.15 goal involvements per 90. Their average match rating for that season computes to 6.75.
Their recorded league career runs from 2024 to 2026: 3 seasons across 3 clubs. At their best John O'Sullivan averaged 6.87 in 2025, Premier Division; at their worst, 6.75 in 2026.
