| Season | League | Apps | Min | Goals | Assists | G+A / 90 | Rating |
|---|---|---|---|---|---|---|---|
| 2008/2009 | Pro League | 34 | 2992 | 8 | 0 | 0.24 | — |
| 2009/2010 | Pro League | 37 | 3148 | 4 | 0 | 0.11 | — |
| 2010/2011 | Pro League | 39 | 3504 | 5 | 3 | 0.21 | — |
| 2011/2012 | Pro League | 37 | 3051 | 14 | 5 | 0.56 | — |
| 2012/2013 | Pro League | 32 | 2841 | 6 | 5 | 0.35 | — |
| 2013/2014 | Pro League | 33 | 2404 | 4 | 4 | 0.3 | — |
| 2014/2015 | Ligue 1 | 38 | 3350 | 2 | 2 | 0.11 | — |
| 2015/2016 | Pro League | 15 | 1675 | 3 | 0 | 0.16 | — |
| 2015/2016 | Ligue 1 | 19 | 1710 | 1 | 0 | 0.05 | 7.35 |
| 2016/2017 | Ligue 1 | 38 | 3368 | 3 | 0 | 0.08 | 7.1 |
| 2017/2018 | Ligue 1 | 1 | 15 | 0 | 0 | — | 6.73 |
| 2017/2018 | Super League (Greece) | 16 | 952 | 1 | 1 | 0.19 | — |
| 2018/2019 | Ligue 2 | 24 | 1928 | 1 | 0 | 0.05 | 7.01 |
| 2019/2020 | Ligue 2 | 9 | 641 | 1 | 0 | 0.14 | 6.71 |
| 2020/2021 | Pro League | 32 | 2511 | 0 | 1 | 0.04 | 7.13 |
| 2021/2022 | Pro League | 19 | 241 | 0 | 0 | 0 | 6.86 |
| 2021/2022 | Challenger Pro League | 5 | 450 | 0 | 0 | 0 | — |
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: 13 Challenger Pro League midfielders, 2021/2022, 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 2026-07-14
Player stats against each opponent club
| Team | MP | W | D | L | G | A | ||
|---|---|---|---|---|---|---|---|---|
 Genk | 21 | 11 | 4 | 6 | 2 | 1 | 2 | 0 |
 Club Brugge | 19 | 10 | 6 | 3 | 1 | 0 | 1 | 0 |
 Standard Liège | 19 | 7 | 4 | 8 | 6 | 2 | 6 | 0 |
 Zulte-Waregem | 16 | 8 | 5 | 3 | 0 | 0 | 2 | 0 |
 KV Kortrijk | 15 | 6 | 6 | 3 | 3 | 1 | 2 | 0 |
 Gent | 15 | 10 | 2 | 3 | 0 | 0 | 1 | 0 |
 Lokeren | 13 | 9 | 1 | 3 | 5 | 0 | 2 | 0 |
 Cercle Brugge | 11 | 9 | 0 | 2 | 1 | 1 | 0 | 0 |
 Mechelen | 11 | 5 | 3 | 3 | 1 | 0 | 2 | 0 |
 OH Leuven | 10 | 4 | 3 | 3 | 0 | 0 | 3 | 0 |
 Sint-Truiden | 8 | 5 | 3 | 0 | 0 | 0 | 0 | 0 |
 LOSC Lille | 8 | 2 | 1 | 5 | 0 | 0 | 3 | 0 |
 Lierse | 8 | 4 | 3 | 1 | 3 | 0 | 3 | 0 |
 Westerlo | 7 | 5 | 0 | 2 | 2 | 0 | 1 | 0 |
 Sporting Charleroi | 7 | 3 | 2 | 2 | 1 | 0 | 0 | 0 |
 SK Beveren | 7 | 5 | 1 | 1 | 2 | 0 | 0 | 0 |
 KV Oostende | 7 | 4 | 1 | 2 | 0 | 0 | 0 | 0 |
 Monaco | 7 | 1 | 2 | 4 | 2 | 0 | 2 | 0 |
 Paris Saint Germain | 6 | 1 | 0 | 5 | 0 | 0 | 2 | 0 |
 AEK Athens | 6 | 3 | 1 | 2 | 2 | 0 | 2 | 0 |
In the 2021/2022 Challenger Pro League, Guillaume Gillet played 5 games (450 minutes) without a direct goal contribution. Against a 13-strong pool of Challenger Pro League midfielders (2021/2022, min. 450 minutes), his goal involvements per 90 places in the 31st percentile, and 8th of 13 for goals scored.
Season ratings peak at 7.35 in 2015/2016, Ligue 1 and bottom out at 6.71 in 2019/2020.
