Domestic-league season · New York Red Bulls.
Missed 6 of New York Red Bulls's ~34 games this season through 6 injury absences (knee). He still appeared 20 times — a solid return given how little of the season he was available. His rating is judged mainly on the games he was fit to play.
| Competition | Apps | G | A | Min | Match |
|---|---|---|---|---|---|
 Major League Soccer | 20 | 0 | 3 | 1555 | 6.97 |
 US Open Cup | 1 | 0 | 0 | 85 | — |
 Leagues Cup | 2 | 0 | 0 | 77 | 6.5 |
Duncan's current-season form is up 87% on last season (Season 15→28), while his Rating eased 34→32. His peak season for form remains 2021/22 (Season 57).
| Season | Club | Apps | G | A | Match | RTG | Season |
|---|---|---|---|---|---|---|---|
| 2025/26 | New York Red Bulls · 8th | 20 | 0 | 3 | 6.97 | 32 | 28 |
| 2024/25 | New York Red Bulls · 7th | 21 | 1 | 0 | 6.76 | 34 | 15 |
| 2022/23 | New York Red Bulls · 4th | 10 | 0 | 0 | 6.54 | 37 | 9 |
| 2021/22 | New York Red Bulls · 7th | 33 | 1 | 3 | 7.14 | 45 | 57 |
| 2020/21 | New York Red Bulls · 2nd | 24 | 3 | 2 | 7.02 | 49 | 38 |
Domestic-league totals per season. RTG = Field Insider Rating (potential / ceiling); Season = age-blind form that year.
K. Duncan is a 28-year-old full-back at New York Red Bulls, rated 31.9 overall by Field Insider's model, ranking 396th of 790 in the Major League Soccer. An experienced operator, he has been a regular starter this season (61.7% of available minutes). His defensive output reads 3.88 tackles, blocks and interceptions per 90. Below: strengths, watch-points, market-value outlook and the latest transfer news on Duncan.
Judged on this season alone, Duncan graded 28 — a strong campaign that ranks top 19% of the 135 full-backs in the Major League Soccer, on 5 clean sheets and 3.878 defensive actions per 90.
Year-on-year, that's a clear step up on last season (Season 15 → 28). Over the 5 seasons on record his form has drifted down, peaking in 2021/22.
On long-term talent our Rating reads 32, 68th of 135 of the 135 full-backs in the Major League Soccer. At 28 Duncan is in his prime years, and a market index of 10 reflects that trajectory.
Read the appearance count in context: Duncan missed 6 games through injury (knee) out of roughly 34 this season. The 20 he did play is a solid return on the time he was fit, and his ratings are weighted toward those games rather than the ones he sat out injured.
Below his 2021/22 peak but holding a solid level — the platform for a return is there.
3.88 tackles, blocks & interceptions per 90 — solid defensive volume, with 5 clean sheets across 20 appearances. Going forward he chipped in 0 goals and 3 assists — a useful bonus from the back.
With a Rating of 31.9, Duncan carries the 68th-highest potential of the full-backs in the Major League Soccer of 135. Defensively he reads as solid defensive volume (3.88 tackles, blocks & interceptions per 90), with a bit more on the ball than most in the role. Experienced and reliable, but the value curve is easing (1.2× now → 0.9× projected in three years).
Generated from Field Insider's rating model · AI-written analysis to follow.
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 (~17), then tapers with age. At 28, Duncan sits on 10, past its peak and easing. The blue line is Duncan's projected Rating — 31.9 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.
No transfer news found for this player.
