| Season | League | Apps | Min | Goals | Assists | G+A / 90 | Rating |
|---|---|---|---|---|---|---|---|
| 2022 | First Division (Ireland) | 13 | 11 | 1 | 0 | — | — |
| 2023 | First Division (Ireland) | 22 | 1172 | 0 | 0 | 0 | — |
| 2023/2024 | Premiership | 10 | 776 | 1 | 0 | 0.12 | — |
| 2024/2025 | Premiership | 34 | 3060 | 0 | 1 | 0.03 | 6.75 |
| 2025/2026 | Championship (Scotland) | 26 | 1739 | 0 | 0 | 0 | 6.33 |
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 2026-07-25
Player stats against each opponent club
| Team | MP | W | D | L | G | A | ||
|---|---|---|---|---|---|---|---|---|
 Partick Thistle | 5 | 1 | 0 | 4 | 0 | 0 | 0 | 0 |
 Dungannon Swifts | 5 | 2 | 1 | 2 | 0 | 0 | 0 | 0 |
 Ballymena United | 5 | 2 | 0 | 3 | 0 | 0 | 2 | 0 |
 Cliftonville | 5 | 1 | 1 | 3 | 0 | 0 | 0 | 0 |
 Ayr United | 4 | 1 | 3 | 0 | 0 | 0 | 0 | 0 |
 Linfield | 4 | 0 | 1 | 3 | 0 | 0 | 0 | 0 |
 St. Johnstone | 4 | 0 | 2 | 2 | 0 | 0 | 0 | 0 |
 Glentoran | 4 | 0 | 3 | 1 | 0 | 0 | 0 | 0 |
 Airdrieonians | 4 | 1 | 1 | 2 | 0 | 0 | 1 | 0 |
 Crusaders | 4 | 2 | 0 | 2 | 0 | 0 | 0 | 0 |
 Queen's Park | 4 | 1 | 0 | 3 | 0 | 0 | 0 | 0 |
 Portadown | 4 | 2 | 1 | 1 | 0 | 1 | 2 | 0 |
 Loughgall | 4 | 1 | 1 | 2 | 0 | 0 | 2 | 0 |
 Larne | 4 | 0 | 2 | 2 | 1 | 0 | 0 | 0 |
 Raith Rovers | 3 | 2 | 0 | 1 | 0 | 0 | 0 | 0 |
 Dunfermline Athletic | 3 | 1 | 2 | 0 | 0 | 0 | 0 | 0 |
 Greenock Morton | 3 | 0 | 1 | 2 | 0 | 0 | 0 | 0 |
 Carrick Rangers | 3 | 1 | 1 | 1 | 0 | 0 | 0 | 0 |
 Arbroath | 3 | 0 | 0 | 3 | 0 | 0 | 0 | 0 |
 Coleraine | 2 | 1 | 0 | 1 | 0 | 0 | 0 | 0 |
Over 26 Championship (Scotland) games in 2025/2026 (1,739 minutes), Len O'Sullivan recorded no direct goal contributions. Per-match rating over the season: 6.33.
At his best he averaged 6.75 in 2024/2025, Premiership; at his worst, 6.33 in 2025/2026.
