| Season | League | Apps | Min | Goals | Assists | G+A / 90 | Rating |
|---|---|---|---|---|---|---|---|
| 2016 | Liga Pro | 22 | 1850 | 1 | 0 | 0.05 | — |
| 2017 | Liga Pro | 1 | 90 | 0 | 0 | 0 | — |
| 2018 | Liga Pro | 17 | 1454 | 2 | 0 | 0.12 | — |
| 2019 | Liga Pro | 18 | 1208 | 1 | 1 | 0.15 | — |
| 2020 | Liga Pro | 31 | 2815 | 2 | 3 | 0.16 | — |
| 2021 | Liga Pro | 27 | 2344 | 3 | 2 | 0.19 | — |
| 2022 | Liga Pro | 12 | 833 | 0 | 2 | 0.22 | — |
| 2022/2023 | Liga MX | 23 | 1526 | 1 | 2 | 0.18 | 6.96 |
| 2023/2024 | Liga MX | 10 | 655 | 0 | 0 | 0 | 6.91 |
| 2024 | Liga Pro | 14 | 1075 | 0 | 1 | 0.08 | 7.04 |
| 2024 | Primera Division (Uruguay) | 10 | 596 | 0 | 0 | 0 | 7.19 |
| 2025 | Liga Pro | 27 | 1376 | 0 | 0 | 0 | 6.53 |
| 2026 | Liga Pro | 9 | 363 | 1 | 1 | 0.5 | 6.46 |
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 2026-08-13
Player stats against each opponent club
| Team | MP | W | D | L | G | A | ||
|---|---|---|---|---|---|---|---|---|
 LDU Quito | 7 | 1 | 1 | 5 | 0 | 0 | 0 | 0 |
 Independiente del Valle | 6 | 3 | 0 | 3 | 0 | 0 | 1 | 0 |
 Libertad | 6 | 2 | 4 | 0 | 0 | 0 | 0 | 0 |
 El Nacional | 5 | 3 | 1 | 1 | 0 | 0 | 0 | 0 |
 Universidad Católica | 5 | 1 | 4 | 0 | 0 | 0 | 2 | 0 |
 Orense | 5 | 2 | 0 | 3 | 0 | 0 | 1 | 0 |
 Aucas | 4 | 1 | 1 | 2 | 0 | 0 | 0 | 0 |
 Mushuc Runa | 4 | 3 | 1 | 0 | 1 | 1 | 1 | 0 |
 Emelec | 4 | 4 | 0 | 0 | 0 | 0 | 1 | 1 |
 Técnico Universitario | 4 | 2 | 2 | 0 | 0 | 0 | 0 | 0 |
 Boca Juniors | 3 | 1 | 1 | 1 | 0 | 0 | 1 | 0 |
 Universitario | 3 | 1 | 0 | 2 | 0 | 0 | 0 | 0 |
 Delfin | 3 | 3 | 0 | 0 | 0 | 0 | 0 | 0 |
 Deportivo Cuenca | 3 | 0 | 1 | 2 | 0 | 1 | 1 | 0 |
 Manta | 3 | 2 | 0 | 1 | 0 | 0 | 1 | 0 |
 Macará | 3 | 2 | 0 | 1 | 0 | 0 | 0 | 0 |
 Wanderers | 2 | 2 | 0 | 0 | 0 | 0 | 0 | 0 |
 Fluminense | 2 | 0 | 2 | 0 | 0 | 0 | 0 | 0 |
 Botafogo | 2 | 1 | 1 | 0 | 0 | 0 | 1 | 0 |
 Argentinos Juniors | 2 | 1 | 0 | 1 | 0 | 0 | 0 | 0 |
Player stats against each opponent national team
| Team | MP | W | D | L | G | A | ||
|---|---|---|---|---|---|---|---|---|
 Saudi Arabia | 1 | 0 | 1 | 0 | 0 | 0 | 0 | 0 |
 Mexico | 1 | 0 | 1 | 0 | 0 | 0 | 0 | 0 |
 Japan | 1 | 0 | 1 | 0 | 0 | 0 | 1 | 0 |
 Iraq | 1 | 0 | 1 | 0 | 0 | 0 | 0 | 0 |
 Nigeria | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 |
 Chile | 1 | 1 | 0 | 0 | 0 | 0 | 1 | 0 |
 Cape Verde Islands | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 |
Byron Castillo's 2026 Liga Pro season produced 1 goal and 1 assist across 9 appearances (363 minutes) — 0.5 goal involvements per 90. Per-match rating over the season: 6.46.
His best-rated season remains 2024 (7.19, Primera Division (Uruguay)); his lowest was 2026 (6.46). His last two rated seasons average 0.53 below his earlier career level.
