T. Koga

T. Koga is a 27-year-old goalkeeper at Sagamihara, rated 17.4 overall by Field Insider's model. In his prime years, he has been a fringe squad member this season (0% of available minutes). Below: strengths, watch-points, market-value outlook and the latest transfer news on Koga.

On the season, Koga graded 0 for current form (age-blind), on 0 clean sheets across 0 appearances.

We hold a single season for Koga, so there's no year-on-year comparison to draw yet — the read above is this campaign only.

On long-term talent our Rating reads 17. At 27 Koga is in his prime years, and a market index of 1.5 reflects that trajectory.

17.4

Ratingi

below regular-starter level

Seasoni

below regular-starter level

Minutes

limited game time

Def. actions / 90

light defensive volume

Output in context · Sagamihara finished 12th of 20 · a mid-table side

Apps

Goals

Assists

Clean sheets

No league appearances recorded this season, so there's no output sample to read yet.

Watch points

Game time. Only 0% of available minutes — needs a settled run to prove the level.
Level. Rates below a nailed-on top-tier starter on our model.

Outlook

Rated 17.4 overall — below regular-starter level. A limited game time keeper carrying the gloves this season. In the prime window — at or near peak market value, so the next two seasons are the ones to cash in or build around.

Generated from Field Insider's rating model · AI-written analysis to follow.

Per 90 & availability

Minutes played %0%

Available fixtures38 of 38

Goals / 900

Assists / 900

Goal contribution / 900

Defensive actions / 900

Player flow

Goal involvements0

Cards / 900

Value & potential by age

Market valueRating

Solid = now · dashed = projected

The gold line is market value — an index (not €) blending rating, age and league. It climbs through the early 20s, peaks around ages 23–27 (~2), then tapers with age. At 27, Koga sits on 1.5, at or near its peak. The blue line is Koga's projected Rating — 17.4 today — recomputed at each age, so it follows the same rise-and-fall as a career matures and declines. Solid = up to today; dashed = projected.

Transfer history

Albirex Niigata S2025/26 – now

Osaka2024/25 – 2025/26

Sagamihara2022/23 – 2024/25Free

Albirex Niigata S2020/21 – 2022/23Free

V-varen Nagasakiuntil 2020/21

About T. Koga

T. Koga is a 27-year-old goalkeeper who plays for Sagamihara, born on March 11, 1999, standing 191 cm tall. He is from Japan. Sagamihara currently sit 12th of 20 in the J3 League.

Field Insider's view

Field Insider currently rates T. Koga at 17.4 with a Season form score of 0. See the full scout report for strengths, watch-points and the market-value outlook.

His honours include 1 career title — among them the Premier League. Full list in the career record.

Career

Across 3 recorded seasons, T. Koga has totalled 54 club appearances with 0 goals and 0 assists for 2 different clubs. His busiest campaign came in 2022/23, with 27 appearances for Albirex Niigata S.

T. Koga's career has also included time at Albirex Niigata S, Osaka and V-varen Nagasaki.

Transfer news

No transfer news found for this player.