Every NBA season produces teams whose records lie. Not intentionally, but mathematically. The Pythagorean win expectation, borrowed from baseball and refined for basketball, estimates how many games a team should have won based on points scored and allowed. The gap between that expectation and a team's actual win percentage is one of the cleanest isolated luck signals in sports. A positive gap means a team won more than its point differential justified. A negative gap means the opposite. Neither is sustainable.
Now that the 2025-26 regular season is in the books and the playoffs are underway, the full-season gaps are locked in. Some of them are striking.
Most Cursed by Win-Pct Gap
These five teams won more games than their underlying performance warranted. That sounds like a gift. It is not. It means their record was propped up by close-game variance rather than dominant play, and historically, that bill comes due in the postseason.
1. Los Angeles Lakers - A gap of +.093, the largest in the league. The Lakers' record outran their point differential by roughly seven or eight wins over a full season. That is a team held together by clutch moments rather than structural soundness.
2. Milwaukee Bucks - At +.071, Milwaukee's gap suggests a roster that kept finding ways to win tight games without ever establishing the margin of comfort their record implied.
3. Philadelphia 76ers - A +.054 gap. The Sixers' season-long point differential painted a more modest picture than their final record. A familiar story in Philadelphia, where optimism and underlying math rarely agree.
4. Sacramento Kings - Their +.037 gap is more modest, but still enough to suggest two or three wins came from fortune rather than force.
5. Orlando Magic - At +.030, Orlando sits at the edge of noise. But it rounds out a top five of teams whose playoff seeding may have been slightly inflated.
Most Blessed by Win-Pct Gap
These teams lost more than their point differentials said they should have. Their records undersold them all year.
1. Charlotte Hornets - A gap of -.107, the most extreme value on either side of the ledger. Charlotte's point differential suggested a team that should have won roughly nine more games. They were better than their record by a wide margin.
That is a historically large gap.
2. New Orleans Pelicans - At -.053, the Pelicans' actual record lagged their expected record by about four wins. A team that bled close games all season.
3. Indiana Pacers - A -.046 gap. Indiana's underlying numbers were quietly stronger than their standing suggested, which may explain some of the offseason discourse around their trajectory.
4. Miami Heat - At -.043, Miami's point differential said they deserved better. Whether that matters now depends on your appetite for moral victories.
5. Boston Celtics - A -.041 gap for a team that hardly needs sympathy. But the Celtics' point differential was even more impressive than their win total, which is a useful data point as the playoffs progress.
What This Tells Us
The spread from the Lakers' +.093 to Charlotte's -.107 represents a range of .200 in win percentage, or roughly 16 wins across a full season. That is the distance between the luckiest and unluckiest teams in the league by this single measure.
Historically, Pythagorean gaps regress almost completely year over year. Teams with large positive gaps tend to lose three to five wins the following season without any roster changes, simply because close games stop breaking their way. Teams with large negative gaps tend to gain wins back just as reliably.
For the teams still playing, the signal is worth watching. Positive-gap teams tend to struggle in the postseason, where possessions tighten and variance narrows. The Lakers' +.093 is not a death sentence. But the math has a longer memory than most highlight reels.
