Kelvin Upshaw vs. Robert Williams III Season by Season Comparison

Side by side comparison of each NBA season of Robert Williams III and Kelvin Upshaw, 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.

Kelvin Upshaw played 3 years in the NBA, 3 less than Robert Williams III, who played 6. Kelvin Upshaw had the first of his seasons in 1988-89, 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
Kelvin Upshaw 3 1 1988-89 to 1990-91
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
Kelvin Upshaw Robert Williams III
Season 1988-892018-19
Team Miami Heat, Boston CelticsBoston Celtics
Honors & Awards
Playoffs Celtics Lost East Conf 1st RdCeltics 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 %
Kelvin Upshaw 32 19.3 6.8 0.3 1.2 1.5 3.7 0.8 0.1 1.7 2.5 3.1 6.6 .467 0.1 0.5 .200 0.6 0.8 .692
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 %
Kelvin Upshaw 3 8.0 3.3 0.0 0.7 0.7 1.7 0.3 0.0 0.3 1.3 1.7 4.0 .417 0.0 0.0 - 0.0 0.0 -
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
Kelvin Upshaw Robert Williams III
Season 1989-902019-20
Team Boston Celtics, Dallas Mavericks, Golden State WarriorsBoston 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 %
Kelvin Upshaw 40 9.7 4.0 0.2 0.8 1.0 1.4 0.7 0.0 0.7 1.3 1.6 3.7 .438 0.1 0.4 .267 0.7 0.9 .757
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 %
Kelvin Upshaw ------- --- ----------
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
Kelvin Upshaw Robert Williams III
Season 1990-912020-21
Team Dallas MavericksBoston Celtics
Honors & Awards
Playoffs Did Not PlayCeltics 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 %
Kelvin Upshaw 48 10.7 5.6 0.4 0.7 1.1 1.8 0.6 0.1 0.8 1.6 2.2 4.8 .450 0.1 0.6 .241 1.1 1.3 .859
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 %
Kelvin Upshaw ------- --- ----------
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
Kelvin Upshaw Robert Williams III
Season -2021-22
Team -Boston Celtics
Honors & Awards -Achievement All-Defensive Second Team
Playoffs -Celtics Lost NBA Finals
more >>
Regular Season Stats
G Min Pts ORb DRb Reb Ast Stl Blk TO PF FGM / A % 3PM / A % FTM / A %
Kelvin Upshaw ------- --- ----------
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 %
Kelvin Upshaw ------- --- ----------
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
Kelvin Upshaw Robert Williams III
Season -2022-23
Team -Boston Celtics
Honors & Awards
Playoffs -Celtics 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 %
Kelvin Upshaw ------- --- ----------
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 %
Kelvin Upshaw ------- --- ----------
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
Kelvin Upshaw Robert Williams III
Season -2023-24
Team -Portland Trail Blazers
Honors & Awards
Playoffs -Did Not Play
more >>
Regular Season Stats
G Min Pts ORb DRb Reb Ast Stl Blk TO PF FGM / A % 3PM / A % FTM / A %
Kelvin Upshaw ------- --- ----------
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 %
Kelvin Upshaw ------- --- ----------
Robert Williams III ------- --- ----------
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