83.7 score · 86% MPG role factor
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Player profile · BOS / POR
Robert Williams
Robert Williams advanced stats and career rankings
RoleC · Age 28
Availability59 games · 1 starts
Workload17.1 MPG · 1,008 minutes
Relative impactPOR #2 of 12 · C #11 of 72
UpdatedJul 21, 2026
44.7 total value · 395 qualified players
26.8 all-time composite · 8 seasons
Low ranking precision · Likely rank #35–#246
Bottom line · 2025–26
Robert Williams delivered a strong 2025–26 campaign, ranking 43rd in per-minute impact. His box-score profile ranked 16th, led by rebounding and shot blocking despite costly turnovers. A smaller role at 17.1 minutes per game lowered his overall impact rating. With only about 1,000 minutes, he finished in the 81st percentile for total season value.
2025–26 NBA percentile rankings: What drives Robert Williams's impact
395 qualified NBA playersEvery player in the comparison logged at least 450 minutes.
Compare with
Overall value
Impact Rate
89
83.7Season Value
81
44.7Scoring role
Usage
12
13.1%True shooting
99
72.2%3-point attempt rate
9
9.2%Free-throw rate
43
22.8%Creation and control
Assist rate
24
8.9%Turnover avoidance
18
15.1%Possession stats
Rebound rate
99
22.3%Steal rate
57
1.7%Block rate
100
7.7%Lineup signal
Offensive lineup impact387-player lineup pool
42
−0.06Defensive lineup impact387-player lineup pool
95
+2.24Workload
Minutes per game
22
17.1Games played
43
59Total minutes
30
1,008Farther right means more of the named trait, not automatically better basketball. Turnover avoidance reverses turnover rate. Lineup rows exclude players below the 1,000-possession lineup-sample floor.
Every season
Robert Williams advanced stats by season
Era-centered box impact supports comparisons through time. Impact Rate and its rank compare players only within that season.
| Season | Team | Age | GP | MP | Era-centered box impact | Impact Rate | Rate rank | Season Value | Value percentile | Evidence |
|---|---|---|---|---|---|---|---|---|---|---|
| 2025–26live model | POR | 28 | 59 | 1,008 | +4.22 | 83.7 | #43 | 44.7 | 81st | Established |
| 2024–25 | POR | 27 | 20 | 351 | +1.53 | — | — | 25.5 | — | Limited |
| 2023–24 | POR | 26 | 6 | 119 | -5.32 | — | — | -8.0 | — | Limited |
| 2022–23 | BOS | 25 | 35 | 824 | +2.51 | 89.2 | #42 | 76.2 | 66th | Established |
| 2021–22 | BOS | 24 | 61 | 1,804 | +4.03 | 95.3 | #19 | 219.1 | 93rd | Strong |
| 2020–21 | BOS | 23 | 52 | 985 | +6.03 | 96.5 | #14 | 162.0 | 88th | Established |
| 2019–20Historical Defense Estimate | BOS | 22 | 29 | 388 | +4.53 | — | — | 52.6 | — | Limited |
| 2018–19Historical Defense Estimate | BOS | 21 | 32 | 283 | +0.42 | — | — | 14.2 | — | Limited |
Career movement
Robert Williams's career impact by season
Peak +6.03 in 2020–21 · 8 seasons · 5,762 minutes
The same historical box-score model is used for every season, making the career shape comparable through time. This is separate from the current lineup-context ranking.
Era-centered box impactMinutes
Across-era box estimateWorkload
Career comparison
Compare the shape, not the calendar
Align by NBA experience to compare season one with season one, or by age to compare players at the same stage of life.
Robert WilliamsArvydas Sabonis
NBA season number · fixed impact axis −5 to +15
Similar career arcs
Players with careers similar to Robert Williams
The score compares era-centered box impact, peak, prime, workload, career length, position, and trajectory aligned by NBA experience. It describes career shape, not playing style or equal ability.
C · All-Time Career #126
Arvydas Sabonis
84%career match
78% season match · 2020–21 ↔ 1995–96C · All-Time Career #540Alperen Şengün
83%career match
81% season match · 2020–21 ↔ 2023–24C · All-Time Career #768Mark Williams
83%career match
94% season match · 2020–21 ↔ 2024–25PF · All-Time Career #414Scottie Barnes
82%career match
78% season match · 2020–21 ↔ 2024–25SG · All-Time Career #436Brandon Roy
82%career match
72% season match · 2020–21 ↔ 2009–10C · All-Time Career #34Ed Macauley
82%career match
76% season match · 2020–21 ↔ 1950–51Why this rank?
Why Robert Williams ranks #43
The current model starts with box production, checks it against multi-season lineup evidence, caps that correction, then accounts for how many minutes the player was trusted to play each game.
Prior rank #16
Current total +2.34 ±0.9
Split model · O -0.06 · D +2.24 = +2.19
Maximum ±0.75
Before the within-season scale
93.5 unadjusted · 86% role factor · rank #43
RAPM estimates lineup impact while controlling for the other nine players on the floor. The multi-season blend, current total model, and current offensive/defensive split are separate estimates, so they need not equal one another. hussEyquation uses the multi-season signal as a bounded correction, not as a standalone verdict.
What the point estimate meansLow precision
The model's 80% impact interval is -0.13 to +4.43. Exact ordering is difficult when many players have overlapping estimates.
- Top 25 chance
- 1%
- Top 50 chance
- 23%
- Top 100 chance
- 53%
- 80% rank range
- #35–#246
Impact Rate shows how strong a player was compared with everyone else that season. Season Value adds how much he played. The career ranking rewards a high peak, a long prime, and repeated seasons near the top. Older seasons use clearly labeled estimates where the NBA did not record today's full set of statistics. Read how every ranking works →