Don May
1968–69 to 1974–75 · 7 seasons
NBA player comparison
Don May vs. Sam Mack: Career comparison
Regular-season verdict
Don May ranks higher in career impact
Sam Mack
1992–93 to 2001–02 · 7 seasons
Impact comparison
Box impact estimates points per 100 possessions above each season's league average. Higher is better. Career ranks and average league finishes work the other way: lower is better.
#1052LeadsCareer Impact RankPeak-weighted regular-season rank#1721
+1.2LeadsPeak box impactEra-adjusted points per 100 possessions above league average · higher is better+1.0
-1.7Average box impact to dateEra-adjusted points per 100 possessions above league average · higher is better-0.6Leads
#31LeadsBest league finish#91
+154 ptsLeadsPoints above replacementCumulative regular-season value+68 pts
379LeadsGames259
Career Impact Rank places Don May #1052 and Sam Mack #1721. It combines league finishes across each player's best three, five, and ten regular seasons, giving the most weight to the best three.
Regular season only. Impact figures are estimates; small gaps are not exact. Playoffs, awards and titles do not determine the verdict.
Career Impact RankSee exactly how both rankings are calculatedDon May99.707 · No. 1,052Sam Mack178.383 · No. 1,721
Only the three league-finish windows below determine Career Impact Rank. Career Value and peak impact are separate measures; neither adds points to this calculation. Lower composite scores rank higher.
Don May
99.707 composite · No. 1,052 all-time
| Window and finishes used | Average finish | Weight | Contribution |
|---|---|---|---|
| Best 3No. 311970–71Reconstructed historical estimateIncludes bounded historical defense estimateNo. 941971–72Reconstructed historical estimateIncludes bounded historical defense estimateNo. 1161972–73Reconstructed historical estimateIncludes bounded historical defense estimate | 80.333 | 50% | 40.167 |
| Best 5No. 311970–71Reconstructed historical estimateIncludes bounded historical defense estimateNo. 941971–72Reconstructed historical estimateIncludes bounded historical defense estimateNo. 1161972–73Reconstructed historical estimateIncludes bounded historical defense estimateNo. 1301968–69Reconstructed historical estimateIncludes bounded historical defense estimateNo. 1621973–74Recorded box inputsIncludes bounded historical defense estimate | 106.600 | 30% | 31.980 |
| Best 10No. 311970–71Reconstructed historical estimateIncludes bounded historical defense estimateNo. 941971–72Reconstructed historical estimateIncludes bounded historical defense estimateNo. 1161972–73Reconstructed historical estimateIncludes bounded historical defense estimateNo. 1301968–69Reconstructed historical estimateIncludes bounded historical defense estimateNo. 1621973–74Recorded box inputsIncludes bounded historical defense estimate5 open slots × No. 169 | 137.800 | 20% | 27.560 |
40.167 + 31.980 + 27.560= 99.707
Open-season rule: every unfilled slot uses No. 169, this player's stored replacement finish.
Sam Mack
178.383 composite · No. 1,721 all-time
| Window and finishes used | Average finish | Weight | Contribution |
|---|---|---|---|
| Best 3No. 911998–99Recorded box inputsIncludes bounded historical defense estimateNo. 1331995–96Recorded box inputsIncludes bounded historical defense estimateNo. 1981997–98Recorded box inputsIncludes bounded historical defense estimate | 140.667 | 50% | 70.333 |
| Best 5No. 911998–99Recorded box inputsIncludes bounded historical defense estimateNo. 1331995–96Recorded box inputsIncludes bounded historical defense estimateNo. 1981997–98Recorded box inputsIncludes bounded historical defense estimateNo. 2121996–97Recorded box inputsIncludes bounded historical defense estimate1 open slot × No. 318.5 | 190.500 | 30% | 57.150 |
| Best 10No. 911998–99Recorded box inputsIncludes bounded historical defense estimateNo. 1331995–96Recorded box inputsIncludes bounded historical defense estimateNo. 1981997–98Recorded box inputsIncludes bounded historical defense estimateNo. 2121996–97Recorded box inputsIncludes bounded historical defense estimate6 open slots × No. 318.5 | 254.500 | 20% | 50.900 |
70.333 + 57.150 + 50.900= 178.383
Open-season rule: every unfilled slot uses No. 318.5, this player's stored replacement finish.
Averages, contributions, and totals are displayed to three decimal places. The ranking calculation keeps full source precision. Read the full method →
Full comparison · Career comparison
Understand the numbers
Start with impact, then compare playing time and skills. Team results add context. These are not categories to tally into a winner.
1 · Ranking evidence
Impact: who ranks higher, and why?
Career Impact Rank compares entire regular-season careers across NBA history. It combines average league places across the best three, five, and ten seasons, weighted 50%, 30%, and 20%. A lower rank or average place is better.
| Metric | Don May | Sam Mack |
|---|---|---|
| Career Impact RankPeak-weighted regular-season rank | #1052Better result for this metric. | #1721 |
| Best 3 average finishAverage league place · lower is better | 80.3Better result for this metric. | 140.7 |
| Best 5 average finishAverage league place · lower is better | 106.6Better result for this metric. | 190.5 |
| Best 10 average finishAverage league place · lower is better | 137.8Better result for this metric. | 254.5 |
Show more stats: Impact
| Metric | Don May | Sam Mack |
|---|---|---|
| Points-above-replacement rankAll-time rank in estimated regular-season points above replacement | #1282Better result for this metric. | #1547 |
| Peak box impactEra-adjusted points per 100 possessions above league average · higher is better | +1.2Better result for this metric. | +1.0 |
| Best 3 average box impactEra-adjusted points per 100 possessions above league average · higher is better | -0.5 | -0.2Better result for this metric. |
| Best 5 average box impactEra-adjusted points per 100 possessions above league average · higher is better | -1.7 | Unavailable |
| Best 10 average box impactEra-adjusted points per 100 possessions above league average · higher is better | Unavailable | Unavailable |
| Points above replacementRegular season · fixed -2.0 replacement baseline · higher is better | +154 ptsBetter result for this metric. | +68 pts |
| Seasons ranked No. 1 | 0 | 0 |
| Top-five impact seasons | 0 | 0 |
| Top-ten impact seasons | 0 | 0 |
2 · Playing time and responsibility
How much did each player take on?
Read games and minutes alongside impact. Offensive usage is the share of team plays a player ends with a shot, free throws, or a turnover while on court. More usage is not automatically better.
| Metric | Don May | Sam Mack |
|---|---|---|
| Games | 379 | 259 |
| Minutes | 6,619 | 5,028 |
3 · Individual skills
Where does each player have an advantage?
These are each player's averages across up to ten best seasons. Career Impact Rank gives the Best 3, Best 5, and Best 10 average league finishes 50%, 30%, and 20% window weights, giving the most weight to the highest peak. The model accounts for position, role, pace, playing time, and team results. Green marks the better result for a metric, including lower turnover rates. Workload and shot-selection measures stay neutral. These rows are not votes toward the ranking.
Shooting
True shooting includes two-pointers, three-pointers, and free throws.
| Metric | Don May | Sam Mack |
|---|---|---|
| True shooting percentage | 50.1% | 52.5%Better result for this metric. |
| True shootingAverage across the best impact seasons selected for the model input profile | 48.6% | 54.0%Better result for this metric. |
Show more stats: Shooting
| Metric | Don May | Sam Mack |
|---|---|---|
| Field-goal percentage | 45.3%Better result for this metric. | 40.0% |
| Three-point percentage | Unavailable | 37.4% |
| Free-throw percentage | 79.8% | 83.1%Better result for this metric. |
Passing
Assist rate is the share of teammates’ made shots assisted while the player is on court. Read turnovers alongside offensive workload; lower turnover rate is generally better.
| Metric | Don May | Sam Mack |
|---|---|---|
| Assist rateAverage across the best impact seasons selected for the model input profile | 9.0% | 11.3%Better result for this metric. |
| Assists per game | 1.0 | 1.3Better result for this metric. |
Show more stats: Passing
| Metric | Don May | Sam Mack |
|---|---|---|
| Turnover rateAverage across the best impact seasons selected for the model input profile | Unavailable | 9.8% |
Rebounding
Rebound rate is the share of available rebounds collected while on court.
| Metric | Don May | Sam Mack |
|---|---|---|
| Rebound rateAverage across the best impact seasons selected for the model input profile | 9.1%Better result for this metric. | 5.9% |
| Rebounds per game | 3.5Better result for this metric. | 2.1 |
Defense
Steals and blocks describe only part of defense. They do not capture every stop, rotation, or matchup.
| Metric | Don May | Sam Mack |
|---|---|---|
| Steal rateAverage across the best impact seasons selected for the model input profile | 1.4% | 1.6%Better result for this metric. |
Show more stats: Defense
| Metric | Don May | Sam Mack |
|---|---|---|
| Block rateAverage across the best impact seasons selected for the model input profile | 0.5% | 0.5% |
Scoring
Points per game describe scoring volume, not overall impact.
| Metric | Don May | Sam Mack |
|---|---|---|
| Points per game | 8.8Better result for this metric. | 7.8 |
4 · Team context, not ranking inputs
What happened with and without them?
A verified with/without comparison is unavailable for this scope. We do not substitute another season’s observations.
Four separate questions
Impact, winning, playoffs, and awards
These are different ways to understand a career. Only Regular Season Impact determines the hussEyquation verdict. The other three sections add basketball context without adding points or changing the rank.
Regular Season Impact
Don May ranks higher in career impact.
Don MayMetricSam Mack
#1052LeadsCareer Impact RankPeak-weighted regular-season rank#1721
+1.2LeadsPeak box impactEra-adjusted points per 100 possessions above league average · higher is better+1.0
-1.7Best 5 average box impactEra-adjusted points per 100 possessions above league average · higher is betterNot available
+154 ptsLeadsPoints above replacementRegular season · fixed -2.0 replacement baseline · higher is better+68 pts
This is the ranking result. It uses regular-season impact only. Team records, playoffs, and awards do not change it.
Team Success
The advantages are split across the available measures.
Don MayMetricSam Mack
656LeadsListed-team regular-season wins267
0.4%Listed-team winning percentage45.1%Leads
8Leads50-win team seasons1
8Leads60-win team seasons0
5LeadsPlayoff team seasons4
Context only. Not included in Career Impact Rank. Final records for every listed team-season. A traded season can include more than one team.
Playoff Résumé
Don May leads every available measure below.
Don MayMetricSam Mack
3LeadsPlayoff appearances2
14LeadsPlayoff games10
20LeadsTeam playoff wins4
1LeadsFinals appearances0
1LeadsChampionships0
Context only. Not included in Career Impact Rank. Team playoff results count only seasons when the player appeared in a playoff game.
Awards
No recorded measure separates these careers.
Don MayMetricSam Mack
Not availableAll-StarNot available
Not availableMVPNot available
Not availableAll-NBANot available
Not availableAll-DefenseNot available
Not availableDPOYNot available
Not availableRookie of the YearNot available
Context only. Not included in Career Impact Rank. Major regular-season honors are recognition, not inputs to the impact ranking.
How each context field is counted
- Listed-team regular-season wins
- The sum of each listed team's final wins in every season the player represented that team.
- Listed-team winning percentage
- Those team wins divided by those teams' total regular-season games.
- 50- and 60-win team seasons
- Listed team-seasons that finished with at least 50 or 60 wins. Shortened seasons are not projected to 82 games.
- Team seasons reaching playoffs
- Listed team-seasons in which that team qualified for the playoffs.
- Playoff appearances and games
- Postseasons and games in which the player appeared.
- Team playoff wins
- Team wins from those postseasons. They describe team results, not individual credit.
- Finals appearances and championships
- Seasons when the player appeared in the playoffs for the finalist or champion.
- Awards
- Recorded NBA selections and major regular-season honors. A zero means the source records none; Not available means the source field is missing.
Source and scope Basketball Reference, NBA seasons 1950–51 through 2025–26, accessed 2026-10-09.
Career Shape Explorer
How the careers developed
Follow every regular season by NBA experience or age. This view describes the path; it does not create another verdict.
Don MaySam MackPeak seasonHistorical source qualification
Estimated points per 100 possessions above that season's league average
Striped bars mark seasons with fewer than 40 games. A dashed mark means that player had no season at the aligned point.
Season-by-season evidenceRead both careers at the same stage
Every observed season keeps its age, era-centered impact estimate, league rank when qualified, career-stage label, and exact evidence link. A missing career point stays missing.
Don MayNBA seasonSam Mack
Season 1
Season 2
Season 3
Season 4
Season 5
Season 6
Observed values come from the accepted season comparison record. Historical source qualifications stay attached to affected seasons. Missing means no NBA season exists at that aligned point; it is never interpolated. Missing is not the same as estimated.