Ryuki Osa

Ryuki Osa is a 18-year-old central midfielder at Kawasaki Frontale, rated 43.6 overall by Field Insider's model. A teenage prospect, he has been a fringe squad member this season (1.8% of available minutes). Below: strengths, watch-points, market-value outlook and the latest transfer news on Osa.

On the season, Osa graded 0 for current form (age-blind), on 0 goals, 0 assists and 0 defensive actions per 90.

We hold a single season for Osa, 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 44. At 18 Osa is still climbing toward his ceiling, and a market index of 8.9 reflects that trajectory.

43.6

Ratingi

developing / rotation level

Seasoni

below regular-starter level

1.8%

Minutes

limited game time

Def. actions / 90

light defensive volume

Output in context · Kawasaki Frontale finished 14th of 20 · a lower-table side

Apps

Def. / 90

—

Tackles

—

Interceptions

Clean sheets

0 tackles, blocks & interceptions per 90 — light defensive volume across 1 appearance. Doing that for a lower-table side (14th of 20) is harder than the bare numbers suggest: a back line under more pressure has to defend more often and protects fewer leads, so the volume — and any clean sheets — carry real weight.

Watch points

Game time. Only 1.8% 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 43.6 overall — developing / rotation level. Defensively he reads as light defensive volume (0 tackles, blocks & interceptions per 90). At 18 the trajectory points up — potential sits near its ceiling (100/100) and market value should climb as minutes and output follow.

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

Per 90 & availability

Minutes played %1.8%

Available fixtures3 of 3

Goals / 900

Assists / 900

Goal contribution / 900

Defensive actions / 900

Player flow

Goal involvements0

Pass accuracy %83

Dribble success %100

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 (~12), then tapers with age. At 18, Osa sits on 8.9, still climbing toward its peak. The blue line is Osa's projected Rating — 43.6 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.

About Ryuki Osa

Ryuki Osa is a 18-year-old central midfielder who plays for Kawasaki Frontale, born on October 13, 2007. He is from Japan. Kawasaki Frontale currently sit 14th of 20 in the J1 League.

This season

In the current season, Ryuki Osa has made 1 appearances with 0 goals and 0 assists across 31 minutes.

Ryuki Osa's next match is on August 29, 2026, when Kawasaki Frontale face JEF United Chiba at home in the J1 League.

Field Insider's view

Field Insider currently rates Ryuki Osa at 43.6 with a Season form score of 0. See the full scout report for strengths, watch-points and the market-value outlook.

Career

Across 2 recorded seasons, Ryuki Osa has totalled 10 club appearances with 0 goals and 0 assists for 1 club. His busiest campaign came in 2026/27, with 9 appearances for Kawasaki Frontale.

On the international stage, Ryuki Osa has represented Japan U17 — 1 cap and 1 goal in our records.

Transfer news

No transfer news found for this player.