Greg Kelser vs. Robert Williams III Season by Season Comparison

Side by side comparison of each NBA season of Robert Williams III and Greg Kelser, from their rookie seasons to their last year played, in chronological order with awards, stats, championships and playoff performance of their teams every year.

Player comparisons:
Career comparison / Season by season

Who had the better rookie season? Who had best stats in their 10th season? Who won a championship first? These questions and many others, are answered here.

Greg Kelser and Robert Williams III both played 6 years in the NBA. Greg Kelser had the first of his seasons in 1979-80, while Robert Williams III had his rookie season in 2018-19. With that starting point, here you can take a look at each of their seasons side by side and compare how their careers evolved in achivements, awards and championships won, the stats they recorded both in the Regular Season and the Playoffs and how their teams performed in the postseason.

Their Careers

Player		 Total Seasons Playoffs Played NBA Years
Greg Kelser 6 2 1979-80 to 1984-85
Robert Williams III 6 5 2018-19 to 2023-24

Comparison Season by Season

Jump to season:
1-2-3-4-5-6

Rookie Season
Greg Kelser Robert Williams III
Season 1979-802018-19
Team Detroit PistonsBoston Celtics
Honors & Awards
Playoffs Did Not PlayCeltics Lost East Conf Semis
more >>
Regular Season Stats
G Min Pts ORb DRb Reb Ast Stl Blk TO PF FGM / A % 3PM / A % FTM / A %
Greg Kelser 50 24.7 14.2 2.5 3.0 5.5 2.2 1.2 0.7 2.8 3.5 5.6 11.9 .472 0.1 0.3 .200 2.9 4.1 .719
Robert Williams III 32 8.8 2.5 0.8 1.7 2.5 0.2 0.3 1.3 0.3 1.1 1.1 1.6 .706 0.0 0.0 - 0.3 0.5 .600
Playoffs Stats
G Min Pts ORb DRb Reb Ast Stl Blk TO PF FGM / A % 3PM / A % FTM / A %
Greg Kelser ------- --- ----------
Robert Williams III 3 4.3 1.3 0.3 2.0 2.3 0.0 0.0 0.0 0.0 0.3 0.3 0.7 .500 0.0 0.0 - 0.7 0.7 1.000

Season 2
Greg Kelser Robert Williams III
Season 1980-812019-20
Team Detroit PistonsBoston Celtics
Honors & Awards
Playoffs Did Not PlayCeltics Lost East Conf Finals
more >>
Regular Season Stats
G Min Pts ORb DRb Reb Ast Stl Blk TO PF FGM / A % 3PM / A % FTM / A %
Greg Kelser 25 26.2 12.3 2.1 2.7 4.8 1.8 1.4 1.2 3.1 3.6 4.8 11.4 .421 0.0 0.1 .000 2.7 4.2 .642
Robert Williams III 29 13.4 5.2 1.4 3.0 4.4 0.9 0.8 1.2 0.7 1.8 2.2 3.0 .727 0.0 0.0 - 0.8 1.2 .647
Playoffs Stats
G Min Pts ORb DRb Reb Ast Stl Blk TO PF FGM / A % 3PM / A % FTM / A %
Greg Kelser ------- --- ----------
Robert Williams III 13 11.5 3.7 1.7 2.2 3.9 0.8 0.2 0.5 0.5 1.4 1.8 2.4 .742 0.0 0.1 .000 0.2 0.5 .333

Season 3
Greg Kelser Robert Williams III
Season 1981-822020-21
Team Detroit Pistons, Seattle SupersonicsBoston Celtics
Honors & Awards
Playoffs Supersonics Lost West Conf SemisCeltics Lost East Conf 1st Rd
more >>
Regular Season Stats
G Min Pts ORb DRb Reb Ast Stl Blk TO PF FGM / A % 3PM / A % FTM / A %
Greg Kelser 60 12.4 5.6 1.3 1.9 3.2 1.0 0.3 0.4 1.4 2.2 1.9 4.5 .428 0.0 0.1 .000 1.8 2.7 .656
Robert Williams III 52 18.9 8.0 2.6 4.3 6.9 1.8 0.8 1.8 1.0 2.0 3.6 5.0 .721 0.0 0.0 .000 0.9 1.4 .616
Playoffs Stats
G Min Pts ORb DRb Reb Ast Stl Blk TO PF FGM / A % 3PM / A % FTM / A %
Greg Kelser 3 2.0 1.3 0.3 0.7 1.0 0.3 0.0 0.0 0.7 0.7 0.0 0.7 .000 0.0 0.0 - 1.3 1.3 1.000
Robert Williams III 3 15.3 6.3 2.7 2.3 5.0 0.7 0.3 3.0 0.3 2.3 3.0 4.7 .643 0.0 0.0 - 0.3 0.7 .500

Season 4
Greg Kelser Robert Williams III
Season 1982-832021-22
Team Seattle SupersonicsBoston Celtics
Honors & Awards -Achievement All-Defensive Second Team
Playoffs Supersonics Lost West Conf 1st RdCeltics Lost NBA Finals
more >>
Regular Season Stats
G Min Pts ORb DRb Reb Ast Stl Blk TO PF FGM / A % 3PM / A % FTM / A %
Greg Kelser 80 18.8 8.3 2.0 3.1 5.0 1.2 0.7 0.4 1.9 3.0 3.1 5.6 .549 0.0 0.0 .000 2.2 3.2 .673
Robert Williams III 61 29.6 10.0 3.9 5.7 9.6 2.0 0.9 2.2 1.0 2.2 4.4 6.0 .736 0.0 0.0 .000 1.1 1.5 .722
Playoffs Stats
G Min Pts ORb DRb Reb Ast Stl Blk TO PF FGM / A % 3PM / A % FTM / A %
Greg Kelser 2 9.5 2.0 1.5 1.5 3.0 0.5 0.5 0.0 0.0 2.0 1.0 2.5 .400 0.0 0.0 - 0.0 0.0 -
Robert Williams III 17 23.2 7.7 2.5 3.6 6.2 1.0 0.7 2.2 0.6 2.0 3.1 4.6 .679 0.0 0.1 .000 1.5 1.6 .893

Season 5
Greg Kelser Robert Williams III
Season 1983-842022-23
Team San Diego ClippersBoston Celtics
Honors & Awards
Playoffs Did Not PlayCeltics Lost East Conf Finals
more >>
Regular Season Stats
G Min Pts ORb DRb Reb Ast Stl Blk TO PF FGM / A % 3PM / A % FTM / A %
Greg Kelser 80 22.3 11.0 2.4 2.5 4.9 1.1 0.9 0.4 2.4 3.1 3.9 7.5 .519 0.0 0.1 .333 3.1 4.5 .702
Robert Williams III 35 23.5 8.0 3.0 5.4 8.3 1.4 0.6 1.4 1.0 1.9 3.6 4.9 .747 0.0 0.0 .000 0.7 1.2 .610
Playoffs Stats
G Min Pts ORb DRb Reb Ast Stl Blk TO PF FGM / A % 3PM / A % FTM / A %
Greg Kelser ------- --- ----------
Robert Williams III 20 20.9 7.7 1.8 4.2 6.0 1.0 0.5 1.3 0.8 2.2 3.4 4.3 .788 0.0 0.1 .000 1.0 1.4 .679

Season 6
Greg Kelser Robert Williams III
Season 1984-852023-24
Team Indiana PacersPortland Trail Blazers
Honors & Awards
Playoffs Did Not PlayDid Not Play
more >>
Regular Season Stats
G Min Pts ORb DRb Reb Ast Stl Blk TO PF FGM / A % 3PM / A % FTM / A %
Greg Kelser 10 11.4 6.2 0.6 1.3 1.9 1.3 0.7 0.0 1.2 1.6 2.1 5.3 .396 0.0 0.1 .000 2.0 2.8 .714
Robert Williams III 6 19.8 6.8 1.8 4.5 6.3 0.8 1.2 1.2 1.2 2.8 2.8 4.3 .654 0.0 0.0 - 1.2 1.5 .778
Playoffs Stats
G Min Pts ORb DRb Reb Ast Stl Blk TO PF FGM / A % 3PM / A % FTM / A %
Greg Kelser ------- --- ----------
Robert Williams III ------- --- ----------
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