| Season | League | Apps | Min | Goals | Assists | G+A / 90 | Rating |
|---|---|---|---|---|---|---|---|
| 2025/2026 | Enterprise National League (England) | 1 | 42 | 0 | 0 | — | — |
| 2025/2026 | Premier League 2 Division One | 7 | 630 | 0 | 0 | 0 | 5 |
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.
Cohort: 14 Premier League 2 Division One goalkeepers, 2025/2026, min. 450 minutes. Computed by ranking the full league corpus, not taken from any feed.
Figures computed from the GioScore season-stats database · as of 2026-08-22
Player stats against each opponent club
| Team | MP | W | D | L | G | A | ||
|---|---|---|---|---|---|---|---|---|
 Leeds United U21 | 2 | 1 | 0 | 1 | 0 | 0 | 0 | 0 |
 Charlton Athletic U21 | 2 | 0 | 1 | 1 | 0 | 0 | 0 | 0 |
 Hull City U21 | 2 | 0 | 0 | 2 | 0 | 0 | 0 | 0 |
 AFC Bournemouth U21 | 2 | 0 | 2 | 0 | 0 | 0 | 0 | 0 |
 West Brom U21 | 1 | 0 | 0 | 1 | 0 | 0 | 0 | 0 |
 Manchester City U21 | 1 | 0 | 0 | 1 | 0 | 0 | 0 | 0 |
 Reading U21 | 1 | 0 | 0 | 1 | 0 | 0 | 0 | 0 |
 Chelsea U21 | 1 | 0 | 0 | 1 | 0 | 0 | 0 | 0 |
 Tottenham U21 | 1 | 0 | 0 | 1 | 0 | 0 | 0 | 0 |
 Arsenal U18 | 1 | 0 | 1 | 0 | 0 | 0 | 0 | 0 |
 Manchester United U21 | 1 | 0 | 1 | 0 | 0 | 0 | 0 | 0 |
 Colchester United U21 | 1 | 0 | 0 | 1 | 0 | 0 | 0 | 0 |
 Ipswich Town U21 | 1 | 0 | 0 | 1 | 0 | 0 | 0 | 0 |
William O'Sullivan featured 7 times in the 2025/2026 Premier League 2 Division One (630 minutes). GioScore's computed rating for the season averages 5. Ranked among 14 Premier League 2 Division One goalkeepers with 450+ minutes in 2025/2026, he lands in the 0th percentile for goal involvements per 90 — goals rank: 1st of 14.
