| Season | League | Apps | Min | Goals | Assists | G+A / 90 | Rating |
|---|---|---|---|---|---|---|---|
| 2013/2014 | Primera Division (El Salvador) | 12 | — | 1 | — | — | — |
| 2014/2015 | Primera Division (El Salvador) | 9 | — | 0 | — | — | — |
| 2015/2016 | Primera Division (El Salvador) | 34 | 2081 | 0 | 0 | 0 | — |
| 2016/2017 | Primera Division (El Salvador) | 34 | 1855 | 1 | 0 | 0.05 | — |
| 2017/2018 | Primera Division (El Salvador) | 30 | 2262 | 1 | 0 | 0.04 | — |
| 2017/2018 | LPF | 6 | 477 | 1 | 0 | 0.19 | — |
| 2017/2018 | Lpf | 16 | 1170 | 0 | 0 | 0 | — |
| 2018/2019 | Primera Division (El Salvador) | 6 | — | 0 | — | — | — |
| 2018/2019 | Lpf | 20 | 1378 | 0 | 0 | 0 | — |
| 2018/2019 | LPF | 7 | 499 | 0 | 0 | 0 | — |
| 2019/2020 | Primera Division (El Salvador) | 12 | 918 | 3 | 0 | 0.29 | — |
| 2020/2021 | Primera Division (El Salvador) | 27 | 1800 | 4 | 0 | 0.2 | 0 |
| 2021/2022 | Primera Division (El Salvador) | 23 | 1227 | 0 | 0 | 0 | — |
| 2022/2023 | Primera Division (El Salvador) | 7 | — | 1 | — | — | — |
| 2023/2024 | Primera Division (El Salvador) | 2 | — | 1 | — | — | — |
| 2024/2025 | Primera Division (El Salvador) | 4 | — | 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.
Figures computed from the GioScore season-stats database · as of 2026-09-04
Player stats against each opponent club
| Team | MP | W | D | L | G | A | ||
|---|---|---|---|---|---|---|---|---|
 Szentlőrinc SE | 2 | 0 | 0 | 2 | 0 | 0 | 0 | 0 |
 Comunicaciones | 2 | 0 | 0 | 2 | 0 | 0 | 0 | 0 |
 Bishop's Stortford | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 |
 Philadelphia Union | 1 | 0 | 0 | 1 | 0 | 0 | 0 | 0 |
 New York RB | 1 | 0 | 0 | 1 | 0 | 0 | 0 | 0 |
 Tigres UANL | 1 | 0 | 0 | 1 | 0 | 0 | 0 | 0 |
 Monterrey | 1 | 0 | 0 | 1 | 0 | 0 | 1 | 0 |
 Rayo Majadahonda | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 |
 Sonsonate | 1 | 1 | 0 | 0 | 1 | 0 | 0 | 0 |
 San Carlos | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 |
 Antigua GFC | 1 | 1 | 0 | 0 | 0 | 0 | 1 | 0 |
 Alajuelense | 1 | 0 | 0 | 1 | 0 | 0 | 0 | 0 |
 Motagua | 1 | 0 | 0 | 1 | 0 | 0 | 0 | 0 |
 Verdes | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 |
 Gyulai Termál | 1 | 0 | 0 | 1 | 0 | 0 | 0 | 0 |
 Montserrat | 1 | 0 | 1 | 0 | 0 | 0 | 0 | 0 |
 Dragón | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 |
Player stats against each opponent national team
| Team | MP | W | D | L | G | A | ||
|---|---|---|---|---|---|---|---|---|
 Qatar | 1 | 0 | 1 | 0 | 0 | 0 | 0 | 0 |
 Korea Republic | 1 | 0 | 0 | 1 | 0 | 0 | 0 | 0 |
 United States | 1 | 0 | 0 | 1 | 0 | 0 | 0 | 0 |
 Canada | 1 | 0 | 0 | 1 | 0 | 0 | 0 | 0 |
 Ecuador | 1 | 0 | 1 | 0 | 0 | 0 | 0 | 0 |
 Honduras | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 |
 Costa Rica | 1 | 0 | 0 | 1 | 0 | 0 | 0 | 0 |
 Guatemala | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 |
 Chile | 1 | 0 | 0 | 1 | 0 | 0 | 0 | 0 |
 Antigua and Barbuda | 1 | 1 | 0 | 0 | 0 | 0 | 1 | 0 |
 St. Kitts and Nevis | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 |
 Martinique | 1 | 0 | 0 | 1 | 0 | 0 | 0 | 0 |
 Suriname | 1 | 0 | 0 | 1 | 0 | 0 | 0 | 0 |
 US Virgin Islands | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 |
Isaac Portillo featured 7 times in the 2022/2023 Primera Division (El Salvador).
Split by competition, the league record covers 3 domestic leagues: Primera Division (El Salvador) (200 appearances, 12 goals), Lpf (36 appearances, 0 goals) and LPF (13 appearances, 1 goal). He reached 25 league appearances in 4 of those 16 campaigns. His busiest three-season stretch was 2015/2016–2017/2018: 120 league appearances, 40 a season.
