| Season | League | Apps | Min | Goals | Assists | G+A / 90 | Rating |
|---|---|---|---|---|---|---|---|
| 2012 | Premier Division | 8 | — | 0 | 0 | — | — |
| 2013 | Premier Division | 3 | — | 0 | 0 | — | — |
| 2014 | Premier Division | 33 | 2875 | 2 | 0 | 0.06 | — |
| 2015 | Premier Division | 30 | — | 1 | 0 | — | — |
| 2016 | Premier Division | 20 | 810 | 0 | 0 | 0 | — |
| 2017 | Premier Division | 17 | 180 | 0 | 0 | 0 | — |
| 2018 | Premier Division | 26 | 2091 | 1 | 0 | 0.04 | — |
| 2019 | Premier Division | 33 | 2909 | 1 | 2 | 0.09 | — |
| 2020 | Premier Division | 15 | 1134 | 0 | 0 | 0 | — |
| 2021 | Premier Division | 34 | 2689 | 2 | 0 | 0.07 | — |
| 2022 | Premier Division | 26 | 1495 | 1 | 2 | 0.18 | — |
| 2023 | Premier Division | 10 | 469 | 0 | 0 | 0 | 6.91 |
| 2024 | Premier Division | 33 | 2923 | 0 | 1 | 0.03 | 7.09 |
| 2025 | Premier Division | 24 | 1556 | 0 | 1 | 0.06 | 6.9 |
| 2026 | Premier Division | 18 | 934 | 0 | 0 | 0 | 6.64 |
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 2026-07-12
Player stats against each opponent club
| Team | MP | W | D | L | G | A | ||
|---|---|---|---|---|---|---|---|---|
 Derry City | 11 | 4 | 4 | 3 | 0 | 0 | 1 | 0 |
 Bohemians | 10 | 4 | 5 | 1 | 0 | 1 | 4 | 0 |
 Shamrock Rovers | 9 | 4 | 3 | 2 | 0 | 0 | 2 | 0 |
 St Patrick's | 9 | 4 | 3 | 2 | 0 | 0 | 3 | 0 |
 Cork City | 7 | 2 | 3 | 2 | 0 | 0 | 1 | 0 |
 Sligo Rovers | 7 | 4 | 1 | 2 | 0 | 0 | 0 | 0 |
 Drogheda United | 7 | 3 | 3 | 1 | 0 | 0 | 1 | 0 |
 Waterford United | 7 | 5 | 1 | 1 | 0 | 0 | 1 | 0 |
 Galway United | 5 | 3 | 1 | 1 | 0 | 0 | 2 | 0 |
 Finn Harps | 4 | 2 | 1 | 1 | 0 | 0 | 1 | 0 |
 Dundalk | 4 | 3 | 0 | 1 | 1 | 0 | 2 | 0 |
 Slovan Bratislava | 4 | 1 | 0 | 3 | 0 | 0 | 0 | 0 |
 BATE | 4 | 1 | 1 | 2 | 0 | 0 | 0 | 0 |
 Qarabağ | 4 | 0 | 1 | 3 | 0 | 0 | 1 | 0 |
 Arsenal | 2 | 0 | 0 | 2 | 0 | 0 | 0 | 0 |
 AZ | 2 | 0 | 1 | 1 | 0 | 0 | 0 | 0 |
 Ferencvárosi | 2 | 1 | 0 | 1 | 0 | 0 | 0 | 0 |
 Molde | 2 | 0 | 0 | 2 | 0 | 1 | 0 | 0 |
 Legia Warszawa | 2 | 0 | 1 | 1 | 0 | 0 | 0 | 0 |
 Hibernians | 2 | 1 | 1 | 0 | 0 | 0 | 0 | 0 |
Sean Gannon went through 18 Premier Division appearances in 2026 (934 minutes) without a goal or an assist. Per-match rating over the season: 6.64.
His league record spans 15 seasons (2012–2026) across 4 clubs. 2024 stands as his highest-rated season (7.09, Premier Division), with 2026 the weakest (6.64). The recent curve points down: 0.23 below his prior career average across the last two rated seasons.
