Ron Harper Jr. 2026–27 projection
Boston CelticsG-FAge 26.4Current age in years, from his birth date.
−0.12
−1.39+1.16ImpactHow many points per 100 possessions he adds compared with an average player. 0 is average.Per 100 possessions0 = league average
Middle 80%Middle 80% of his possible Impact this season, in points per 100 possessions versus an average player. of outcomes · ±0.99Spread of his possible Impact, one standard deviation. Smaller means we are more sure.
Playing time
Est. minutesEstimated regular-season minutes, allowing for health, role and competition for playing time.
674
234–1,042Middle 80% of simulated season minutes, including health, role and competition for playing time.
GamesExpected games played, allowing for health and role, to the nearest game.
60
18–80Middle 80% of simulated games played.
Minutes a gameEstimated minutes per game played.
11.2
AvailabilityChance of playing at least 75% of estimated minutes. Includes health, role and rotation competition; not the chance of staying healthy.
72%
Small numbers under each total are the middle 80% of outcomes.
Where Impact comes from
JAYLENOur player impact rating, in points per 100 possessions versus an average player.
−0.17Our player impact rating
Expected EPMDunks & Threes’ estimate of current impact from career data, per 100 possessions versus average.
−0.11From Dunks & Threes
Impact blends two ratings: 22% JAYLEN and 78% Expected EPM, each aged forward a year.
Rating historyHis past seasons in the two ratings behind Impact, in points per 100 possessions versus an average player.
−3
−2
−1
Avg
+1
+2
22–2323–2424–2525–2626–27›Season by season
| Season | Age | Min | Games | JAYLEN | Exp. EPM | Actual EPM |
|---|---|---|---|---|---|---|
| 2025–26 | 25 | 318 | 29 | +1.05 | +0.12 | −0.29 |
| 2024–25 | 24 | 17 | – | – | −2.58 | – |
| 2023–24 | 23 | 4 | – | – | −2.45 | – |
| 2022–23 | 22 | 49 | – | – | −2.34 | – |
How he joinedHow the player joined his current team, from the official roster.
Signed September 19, 2025
Celtics teammates
- PlayerImpactHow many points per 100 possessions he adds compared with an average player. 0 is average.MinEstimated regular-season minutes, allowing for health, role and competition for playing time.
- Derrick WhiteGImpact +2.34Estimated minutes 2,304
- Payton PritchardGImpact +2.03Estimated minutes 2,213
- Jayson TatumF-GImpact +3.97Estimated minutes 2,205
- Sam HauserFImpact +0.78Estimated minutes 1,712
- Neemias QuetaCImpact +2.06Estimated minutes 1,632
- Paul GeorgeFImpact +0.62Estimated minutes 1,618
- Baylor ScheiermanGImpact −0.14Estimated minutes 1,456
- Hugo GonzálezGImpact +0.20Estimated minutes 1,340
- Mitchell RobinsonC-FImpact +1.04Estimated minutes 1,220
- Jordan WalshGImpact −0.31Estimated minutes 1,110
›10 more on the roster
- Luka GarzaCImpact +0.72Estimated minutes 808
- Mike ConleyGImpact −0.65Estimated minutes 743
- Chris Cenac Jr.FImpact −2.13Estimated minutes 333
- Devin CarterGImpact −0.17Estimated minutes 109
- Amari WilliamsF-CImpact −3.12Estimated minutes 105
- Dillon MitchellFImpact −1.68Estimated minutes 98
- Gabe McGlothanFImpact −2.71Estimated minutes 0
- Hayden GrayGImpact −2.59Estimated minutes 0
- Milos UzanGImpact −2.23Estimated minutes 0
- Tucker DeVriesImpact −2.02Estimated minutes 0
Ranges assume he plays. Impact is points per 100 possessions compared with an average player (0 = average).