| Season | League | Apps | Min | Goals | Assists | G+A / 90 | Rating |
|---|---|---|---|---|---|---|---|
| 2013/2014 | Segunda B - Group 1 | 21 | 841 | 0 | 0 | 0 | — |
| 2013/2014 | Segunda B - Group 2 | 13 | — | 0 | 0 | — | — |
| 2014/2015 | Segunda B - Group 1 | 34 | 2955 | 0 | 0 | 0 | — |
| 2014/2015 | Segunda B - Group 2 | 27 | — | 0 | 0 | — | — |
| 2015/2016 | La Liga 2 (Spain) | 23 | 1798 | 0 | 0 | 0 | 6.82 |
| 2016/2017 | Segunda B - Group 2 | 21 | 1431 | 2 | 0 | 0.13 | — |
| 2016/2017 | Segunda B - Group 1 | 21 | 1431 | 2 | 0 | 0.13 | — |
| 2017/2018 | Segunda B - Group 1 | 1 | 90 | 0 | 0 | 0 | — |
| 2017/2018 | Segunda B - Group 2 | 5 | 355 | 1 | 0 | 0.25 | — |
| 2018/2019 | La Liga 2 (Spain) | 27 | 1887 | 0 | 2 | 0.1 | 6.93 |
| 2019/2020 | La Liga 2 (Spain) | 19 | 534 | 0 | 0 | 0 | 6.7 |
| 2020/2021 | La Liga 2 (Spain) | 36 | 2819 | 0 | 0 | 0 | 7.01 |
| 2021/2022 | Liga Portugal | 28 | 2015 | 2 | 1 | 0.13 | 6.86 |
| 2022/2023 | La Liga 2 (Spain) | 33 | 2586 | 0 | 2 | 0.07 | 7.07 |
| 2023/2024 | La Liga 2 (Spain) | 32 | 2228 | 1 | 2 | 0.12 | 7.09 |
| 2024 | Super League (Malaysia) | 8 | 642 | 0 | 0 | 0 | 6.75 |
| 2025/2026 | Super League (Malaysia) | 1 | 33 | 0 | 0 | — | 6.27 |
| 2026 | K League 1 | 8 | 311 | 0 | 0 | 0 | 6.4 |
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 2026-07-26
Player stats against each opponent club
| Team | MP | W | D | L | G | A | ||
|---|---|---|---|---|---|---|---|---|
 Albacete | 10 | 3 | 3 | 4 | 0 | 0 | 2 | 0 |
 Real Oviedo | 9 | 1 | 2 | 6 | 0 | 0 | 0 | 0 |
 Sporting Gijón | 9 | 3 | 3 | 3 | 0 | 0 | 1 | 0 |
 Real Zaragoza | 9 | 1 | 4 | 4 | 0 | 0 | 0 | 0 |
 Mirandés | 9 | 4 | 3 | 2 | 0 | 1 | 3 | 1 |
 Málaga | 8 | 1 | 2 | 5 | 0 | 0 | 2 | 0 |
 Alcorcón | 8 | 4 | 3 | 1 | 1 | 1 | 1 | 0 |
 Las Palmas | 8 | 3 | 4 | 1 | 0 | 0 | 1 | 0 |
 Lugo | 8 | 2 | 4 | 2 | 0 | 0 | 2 | 0 |
 Girona | 6 | 1 | 2 | 3 | 0 | 0 | 1 | 0 |
 Mallorca | 6 | 3 | 1 | 2 | 0 | 0 | 1 | 0 |
 Elche | 6 | 2 | 0 | 4 | 0 | 0 | 1 | 0 |
 Ponferradina | 6 | 4 | 0 | 2 | 0 | 0 | 1 | 0 |
 FC Cartagena | 6 | 3 | 2 | 1 | 0 | 0 | 3 | 0 |
 Huesca | 5 | 1 | 2 | 2 | 0 | 0 | 1 | 0 |
 Real Valladolid | 5 | 1 | 2 | 2 | 0 | 0 | 1 | 0 |
 Almería | 5 | 1 | 2 | 2 | 0 | 1 | 2 | 0 |
 Numancia | 5 | 1 | 2 | 2 | 0 | 0 | 0 | 0 |
 Cádiz | 5 | 2 | 1 | 2 | 0 | 0 | 1 | 0 |
 Racing Santander | 5 | 2 | 1 | 2 | 0 | 0 | 1 | 0 |
2026 brought Iker Undabarrena 8 appearances in the K League 1 (311 minutes), with no direct goal involvement recorded. GioScore's computed rating for the season averages 6.4.
At his best he averaged 7.09 in 2023/2024, La Liga 2 (Spain); at his worst, 6.4 in 2026. Compared with his earlier career average, the last two rated seasons are down by 0.35.
