| Season | Team | Competition | MP | G | A | Rating | ||
|---|---|---|---|---|---|---|---|---|
| 2026 | Kawasaki Frontale | J1 League | 2 | 0 | 0 | 0 | 0 | 6.1 |
| 2025 | Kawasaki Frontale | J1 League | 13 | 1 | 0 | 0 | 0 | 6.6 |
| 2024 | Kawasaki Frontale | J1 League | 24 | 4 | 0 | 0 | 0 | 6.7 |
| 2023 | Kawasaki Frontale | J1 League | 16 | 4 | 0 | 3 | 0 | 6.8 |
| 2022 | Kawasaki Frontale | J1 League | 28 | 3 | 2 | 1 | 0 | 6.7 |
| 2021 | Kawasaki Frontale | J1 League | 33 | 10 | 3 | 0 | 0 | 6.9 |
| 2020 | Kawasaki Frontale | J1 League | 27 | 14 | 4 | 0 | 0 | 7.1 |
| 2019 | Kawasaki Frontale | J1 League | 30 | 12 | 2 | 0 | 0 | 7.1 |
| 2018 | Kawasaki Frontale | J1 League | 27 | 14 | 5 | 1 | 0 | 7.3 |
| 2017 | Kawasaki Frontale | J1 League | 34 | 23 | 8 | 1 | 0 | 7.4 |
| 2016 | Kawasaki Frontale | J1 League | 32 | 15 | 0 | 3 | 0 | – |
| 2015 | Kawasaki Frontale | J1 League | 18 | 5 | 0 | 0 | 0 | – |
| 2014 | Kawasaki Frontale | J-League | 30 | 12 | 0 | 2 | 0 | – |
| 2013 | Kawasaki Frontale | J-League | 19 | 5 | 0 | 0 | 0 | – |
| 2012 | Kawasaki Frontale | J-League | 12 | 6 | 0 | 1 | 0 | – |
| 2011 | Kawasaki Frontale | J-League | 23 | 12 | 0 | 0 | 0 | – |
| Total | 368 | 140 | 24 | 12 | 0 | – | ||
Y. Kobayashi career history shows progression across clubs and competitions, including club timeline, national team appearances and overall career totals.