Player stats against each opponent club
| Team | MP | W | D | L | G | A | ||
|---|---|---|---|---|---|---|---|---|
 FC Tokyo | 6 | 2 | 2 | 2 | 0 | 0 | 1 | 0 |
 Yokohama | 4 | 2 | 0 | 2 | 0 | 0 | 0 | 0 |
 Sanfrecce Hiroshima | 4 | 1 | 0 | 3 | 0 | 0 | 0 | 0 |
 Avispa Fukuoka | 3 | 0 | 1 | 2 | 0 | 0 | 0 | 0 |
 Shimizu S-Pulse | 3 | 1 | 0 | 2 | 0 | 0 | 1 | 0 |
 Kawasaki Frontale | 3 | 0 | 1 | 2 | 1 | 0 | 1 | 0 |
 Fagiano Okayama | 3 | 1 | 1 | 1 | 0 | 0 | 2 | 0 |
 Kashiwa Reysol | 2 | 0 | 0 | 2 | 0 | 0 | 0 | 0 |
 Sagan Tosu | 2 | 1 | 0 | 1 | 0 | 0 | 0 | 0 |
 Tokyo Verdy | 2 | 1 | 0 | 1 | 0 | 0 | 0 | 0 |
 Kyoto Sanga | 2 | 0 | 1 | 1 | 0 | 0 | 0 | 0 |
 Albirex Niigata | 2 | 1 | 0 | 1 | 0 | 0 | 0 | 0 |
 Cerezo Osaka | 2 | 1 | 1 | 0 | 0 | 0 | 0 | 0 |
 Kashima Antlers | 2 | 0 | 0 | 2 | 0 | 0 | 0 | 0 |
 Vissel Kobe | 2 | 0 | 0 | 2 | 0 | 0 | 0 | 0 |
 Júbilo Iwata | 2 | 1 | 0 | 1 | 0 | 0 | 0 | 0 |
 Machida Zelvia | 2 | 1 | 0 | 1 | 0 | 0 | 0 | 0 |
 Gamba Osaka | 2 | 0 | 1 | 1 | 0 | 0 | 1 | 1 |
 Urawa Reds | 1 | 0 | 0 | 1 | 0 | 0 | 0 | 0 |
 Tokushima Vortis | 1 | 0 | 0 | 1 | 0 | 0 | 0 | 0 |
Koki Tachi plays as a defender for Shonan Bellmare. Koki Tachi has scored 1 goals in 62 professional appearances. In the J-League 2025, Koki Tachi has scored 1 goals in 25 appearances, earning an average rating of 7.2. Koki Tachi brings experience and reliability to the backline with 62 professional appearances under his belt. Koki Tachi stands 173 cm tall, weighs 73 kg.
Koki Tachi's professional career spans from 2022 to 2025, a period of roughly 3 seasons over which he has amassed 62 appearances. With 1 goals and 0 assists recorded across that span, his record reflects a sustained contribution at the highest level.
His most productive season in attacking terms came in 24/25 with Shonan Bellmare, when he registered 1 goals and 0 assists in 30 matches, playing 931 minutes. That campaign stands out as one of the high points of his output.
In his most recent recorded season (24/25) at Shonan Bellmare, Koki Tachi played 30 matches, scoring 1 goals and providing 0 assists, with an average match rating of 6.75.
| Club | Period | Apps | Goals | Assists | Minutes | YC | RC | Rating |
|---|---|---|---|---|---|---|---|---|
| Shonan Bellmare | 2018/2019 - now | 62 | 1 | 0 | 2768 | — | — | 6.61 |
| Total | 62 | 1 | 0 | 2768 |
| Season | Club | Apps | Goals | Assists | Minutes | YC | RC | Rating |
|---|---|---|---|---|---|---|---|---|
| 24/25 | Shonan Bellmare | 30 | 1 | — | 931 | 1 | 0 | 6.75 |
| 23/24 | Shonan Bellmare | 4 | 0 | — | 356 | 1 | 0 | 7.02 |
| 22/23 | Shonan Bellmare | 14 | 0 | — | 750 | 5 | 1 | 5.71 |
| 21/22 | Shonan Bellmare | 14 | 0 | — | 731 | 0 | 0 | 6.80 |
