Cooper Flagg vs. Tom Heinsohn Season by Season Comparison
Side by side comparison of each NBA season of Tom Heinsohn and Cooper Flagg, from their rookie seasons to their last year played, in chronological order with awards, stats, championships and playoff performance of their teams every year.
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.
Cooper Flagg played 1 year in the NBA, 8 less than Tom Heinsohn, who played 9. Cooper Flagg had his first NBA Season in 2025-26, while Tom Heinsohn had his rookie season in 1956-57. 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 achievements, 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 |
| Cooper Flagg | 1 | 0 | 2025-26 |
| Tom Heinsohn | 9 | 9 | 1956-57 to 1964-65 |
Comparison Season by Season |
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Jump to season: | ||
Rookie Season |
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| Cooper Flagg | Tom Heinsohn | |
| Season | 2025-26 | 1956-57 |
| Team | Dallas Mavericks | Boston Celtics |
| Honors & Awards | - |  Rookie of the Year |
| - | All-Star Game | |
| Playoffs | Did Not Play |  NBA Champion |
Rookie Season Stats Comparison | ||||||||||||||||||||
| Regular Season Stats | ||||||||||||||||||||
| G | Min | Pts | ORb | DRb | Reb | Ast | Stl | Blk | TO | PF | FGM / A | % | 3PM / A | % | FTM / A | % | ||||
| Cooper Flagg | 1 | 32.0 | 10.0 | 1.0 | 9.0 | 10.0 | 0.0 | 1.0 | 0.0 | 3.0 | 3.0 | 4.0 | 13.0 | .308 | 0.0 | 1.0 | .000 | 2.0 | 2.0 | 1.000 |
| difference: | +71 | +2.1 | +6.2 | +0.2 | +1.6 | -1.2 | +2.2 | +2.6 | +.089 | +1.8 | +2.8 | +.210 | ||||||||
| Tom Heinsohn | 72 | 29.9 | 16.2 | - | - | 9.8 | 1.6 | - | - | - | 4.2 | 6.2 | 15.6 | .397 | - | - | - | 3.8 | 4.8 | .790 |
| Playoffs Stats | ||||||||||||||||||||
| G | Min | Pts | ORb | DRb | Reb | Ast | Stl | Blk | TO | PF | FGM / A | % | 3PM / A | % | FTM / A | % | ||||
| Cooper Flagg | DNP | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Tom Heinsohn | 10 | 37.0 | 22.9 | - | - | 11.7 | 2.0 | - | - | - | 4.0 | 9.0 | 23.1 | .390 | - | - | - | 4.9 | 6.9 | .710 |
Additional Years |
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* Tom Heinsohn played 8 seasons more than Cooper Flagg in the NBA. In that period—his seasons 2 to 9, from 1958 to 1965—Tom Heinsohn played in 8 Playoffs and won 7 NBA Championships. In those 8 extra years over Cooper Flagg, Tom Heinsohn got these achievements: | |
| Honors & Awards | 4 All-NBA Second Team 5 All-Star Game |