The Index · Legend
Jack SikmaSeattle SuperSonics · #43
Jack Sikma is a retired center best known with the Seattle SuperSonics. Skilled champion center with a step-back. Career averages: 15.6 points, 9.8 rebounds and 3.2 assists per game.
Balladex Impact · 71
J
⬢ Rare
Seattle SuperSonics · #43 · Center
Jack Sikma
Season avg10.4 pts · 5.7 reb · 1.9 ast · .427 fg
Career avg15.6 pts · 9.8 reb · 3.2 ast · .462 fg
IMPACTBalladex Impact 71 — Star starter tierINDEXJack Sikma · Seattle SuperSonicsIMPACTBalladex Impact 71 — Star starter tierINDEXJack Sikma · Seattle SuperSonics
Scouting report
Jack Sikma — the report card
Read his whole game at a glance, then dive into any skill. Grades from the DNA model + real production.
C+
retired standout · center · Impact 71
Jack Sikma is a retired center best known with the Seattle SuperSonics. Skilled champion center with a step-back. Career averages: 15.6 points, 9.8 re
C-
OffenseC-
DefenseC-
Feel / IQC-
Playmaking
Below average creator
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B-
Scoring
Strong scorer
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C+
Rebounding
Average on the glass
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F
3PT / spacing
Below average spacing
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D
Perimeter D
Below average on the perimeter
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C
Paint / rim D
Average at the rim
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C
Clutch
Average late
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C+
Athleticism
Average tools
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C-
Basketball IQ
Reads the game
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A+
Durability
Availability
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Act II
Where Jack Sikma stands
Live ladders from the Balladex models, and what he's chasing. Rankings recompute nightly from real production, accolades, and search demand.
The laddersmodel · recomputes nightly
✦ Balladex Consensus: Star starter tier — a blend of Impact, production and résumé.
Futures & chases
—MVP odds
71Impact index
372Star score
Career scoring average15.6 ppg
Seasons in the index14
Accolades on file2
1× NBA Champion · 7× NBA All-Star
Stat explorer
Jack Sikma — every number, three levels deep
Headline → metric → the raw history behind it. Real career data; tracking-only metrics labeled.
B-
Scoring
10.4 PPG
drill in ↓
C-
Playmaking
1.9 APG
drill in ↓
C+
Rebounding
5.7 RPG
drill in ↓
F
Shooting
.341 3P%
drill in ↓
The engine
How the model sees Jack Sikma
Projection = per-minute rate × projected minutes. Rates are recency- and health-weighted, aged along a per-stat curve, and adjusted for live usage/role. No black box — every number shows its work.
Projected 1991-92 74% confidence
9.9
pts
8.1–11.7
5.3
reb
4.4–6.2
1.7
ast
1.1–2.3
23.9
min
proj
76
gp
health
.430
fg%
~base
.336
3p%
~base
Bands widen as confidence drops. Derived live from the real 14-season history below.
What moves the points line vs last season
Last season 10.4 → projected 9.9 PPG
Minutes / role
-0.5
Development (his trend)
-0.1
Age curve
+0.0
Live context
+0.2
Net vs last season-0.5 PPG
Everything it reads
📊
14 seasons of per-minute rates
every box line, minutes-normalized
real
⚖
Recency × games-played weight
recent, healthy seasons anchor the baseline
auto
📈
Weighted least-squares trend
his own trajectory, read season over season
+dev
🕰
Per-stat aging curves
age — — applied per stat
curve
🔌
Live role context
usage & role shifts fold in when the feed is present
+ctx
🏥
Durability signal
GP last 3: 80 / 71 / 77 → games & confidence
health
The real history it trains onsource: Basketball-Reference · verified
Jack Sikma career stats, season by season
| Season | GP | MIN | PTS | REB | AST | FG% | 3P% |
|---|---|---|---|---|---|---|---|
| 1977-78 | 82 | 27.3 | 10.7 | 8.3 | 1.6 | .455 | |
| 1978-79 CHIP | 82 | 36.1 | 15.6 | 12.4 | 3.2 | .460 | |
| 1979-80 | 82 | 34.1 | 14.3 | 11.1 | 3.4 | .475 | .000 |
| 1980-81 | 82 | 35.6 | 18.7 | 10.4 | 3.0 | .454 | .000 |
| 1981-82 | 82 | 37.2 | 19.6 | 12.7 | 3.4 | .479 | .154 |
| 1982-83 | 75 | 34.2 | 18.2 | 11.4 | 3.1 | .464 | .000 |
| 1983-84 | 82 | 36.5 | 19.1 | 11.1 | 4.0 | .499 | .000 |
| 1984-85 | 68 | 35.3 | 18.5 | 10.6 | 4.2 | .489 | .200 |
| 1985-86 | 80 | 34.9 | 17.1 | 9.4 | 3.8 | .462 | .000 |
| 1986-87 | 82 | 30.9 | 12.7 | 10.0 | 2.5 | .463 | .000 |
| 1987-88 | 82 | 35.6 | 16.5 | 8.6 | 3.4 | .486 | .214 |
| 1988-89 | 80 | 32.3 | 13.4 | 7.8 | 3.6 | .431 | .380 |
| 1989-90 | 71 | 31.7 | 13.9 | 6.9 | 3.2 | .416 | .342 |
| 1990-91 | 77 | 25.2 | 10.4 | 5.7 | 1.9 | .427 | .341 |
| Career | 1107 | 33.4 | 15.6 | 9.8 | 3.2 |
Source: Basketball-Reference. Backtested against completed player-seasons in the index. The same engine powers Tonight's projection, EraLab, and the role simulator — one model, asked different questions. Illustrative.
Act III
The Lab
Every number, live and interactive. Real career data; models labeled.
Gold = MVP / Championship season · hover any bar. Real per-game data; per-36 & totals derived.
EraLab · the stat time machinenovel
Re-express a season in today's pace-and-space.
—raw PPG
→
—in 2026 pace
why
Player DNA + compssimilarity model
Scoring map · clickable zonesShotChart
Team-tinted. Modeled where tracking data is absent.
Role simulatorpowered by GM engine
Change the roster around him — his projection updates live.
Projected line shifts to — usage , assists rise as primary initiator. Title odds . Illustrative.
Context
Are the Seattle SuperSonics built to win?
Team projection rolled up from the roster + last-season baselines — and what it means for his role.
41–41proj record
+0.0net index
50off index
50def index
94pace
Aggressive hedge & helpscheme
Roster delta · what changed
Aggressive hedge & help — Hedges hard on ball screens and rotates aggressive help from the weak side. Defensive anchors: —.
How his role moves
Primary center role on a team grading 50 offense / 50 defense. No calibrated baseline for this team yet — record is modeled.
Balladex Impact
71 of 99
Star starter tier.
Rarity
◆ Rare
Rank #126 of 715 in NBA.
Résumé
2 accolades
1× NBA Champion · 7× NBA All-Star
Act IV
The Ballad of Jack Sikma
Birth to now — the making of a legend, narrated and scored.
Seattle SuperSonics
Turning pro
Drafted 1977 as a Center.
true
Jack Sikma is a retired retired standout. Skilled champion center with a step-back.
Chapter
He averaged 15.6 points, 9.8 rebounds and 3.2 assists and won 1 championship over his career.
Where things stand
A retired standout and Seattle SuperSonics name.
▶
▶
Sikma's story
The documentary, narrated
Highlights
Off the court
Measurables ESPN
- Height
- 6' 11"
- Weight
- 250 lbs
- NBA debut
- 1977
- Draft
- 1977
- Jersey
- #43
Legacy
Skilled champion center with a step-back.
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The person
A retired retired standout and Seattle SuperSonics name.
Retired
Seattle SuperSonics
Champion
Verified profiles & sources
FAQ
Jack Sikma — frequently asked
The questions people ask most about Jack Sikma, answered.
What were Jack Sikma's career averages?
Jack Sikma averaged 15.6 points, 9.8 rebounds and 3.2 assists per game.
Is Jack Sikma retired?
Yes — Jack Sikma is a retired center.
Jack Sikma career stats & accolades are real, and team projections and recent-game home/away splits are computed from real production. DNA ratings, grades, tonight's projection, ladders, live win probability and simulator outputs are Balladex model output. Not affiliated with the NBA.
