The Sophomore Leap: Real, and Almost All of It Is Age
NBA rookies add 0.97 points per 36 in year two, but players the same age improve just as much. The one real year-two effect is 1.53 more minutes a game.
9 min read
Category
Data Deep-Dives
Long-form investigations that start with a question and follow the numbers wherever they lead. No takes without a table behind them.
These are the pieces that start with a question and end with a table. Most of them run against the datasets published at /data/data_layer/ — the 2023-24 game results, the team ratings, and 25,000 shot-level records — which means every figure in them can be recomputed by anyone who downloads the same file. Each article states its filter, its sample size, and its standard error, and several of them end by reporting that there is nothing there: the two sides of an NBA floor are statistically indistinguishable, the revenge-game effect is an artifact of the rating you conditioned on, and win streaks arrive at close to the rate that weighted coin flips predict. The nulls are kept on purpose. A lane that published only the questions that worked out would not be worth reading.
The Turnover Floor: 22 Seasons, One Number That Would Not Move
NBA teams turned it over 14.50 times a game in 2004-05 and 14.52 last season. The rate fell only because pace rose - and it is now climbing back.
7 min read
The Climb and the Slide: The NBA's Bottom Empties Faster Than Its Top
Bottom-five NBA teams reach .500 in a median of three seasons; top-five teams need five to fall below it. A symmetric league would take the same both ways.
9 min read
The Parity Pendulum: NBA Balance Comes in Eras, Not Trends
2022-23 was the NBA's most balanced season in 27 years; 2025-26 among the least. No trend links them: eras of imbalance are what sticky rosters produce.
9 min read
The Conference Tax: The West Was a Home Court Better, and It Cost a Record One Win
The West went 261-191 against the East in 2023-24, +1.95 a game, nearly a home court. Rank for rank the gap lived in the play-in chairs and cost a record one win.
9 min read
The Rest Ledger: The NBA Balances Your Fatigue, Not Theirs
Every team played 13-17 back-to-backs (SD 0.94 vs 3.39 by chance); opponents on one ranged 9-19. The schedule engineers one side. Worth 0.73 wins.
9 min read
The Straight-On Premium: What the Middle of the Lane Pays
Matched on distance, paint shots inside a 20-degree cone convert 49.8% against 44.6% from the side: +5.1 points. Outside the paint the same test is dead flat.
9 min read
The Shot Oligarchy: Concentrated Offenses Win — but Not for the Reason You Think
Winning teams ran on ~8 effective shooters, losing ones 12-15; r = -0.67 with wins. But diffusion tracks roster churn: concentration is a symptom, not a scheme.
8 min read
The Margin Creep: The Season Doesn't Get Less Competitive — the Bottom Falls Out of It
Margins swell from 11.5 in autumn to 13.0 by spring; five-point games fall by a third. Split 1,230 games by tier and the creep is the bottom falling out.
8 min read
The Coach Ledger: What Three Benches Actually Inherited
Two of three spotlight benches inherited exactly .500 teams. Daigneault's completed arc, Redick's proof year, Dusty May's day zero, from real season tables.
9 min read
The Shot Market: Why a Star's Shot and a Bench Player's Shot Cost the Same
Rank 547 shooters by load and the price of a shot barely moves: harder diets and better shotmaking cancel to 1.09 — until the last rung, where it breaks by 0.09.
9 min read
"Any Given Night," Measured: How Often the Worse Team Actually Wins
Across 1,230 games, favorites separated by 5+ points of season win% won 70.8% — and 30-point mismatches still lost one in six. The curve and the upset ledger.
8 min read
The Heave: What Every 3P% You Have Ever Read Quietly Throws Away
248 threes from 30+ feet hit 20.2% — a blend of a 28.9% logo shot and a 6.2% surrender, split by a dead zone at 33 feet where the arc simply ends.
8 min read
The Restricted-Area Cliff: The Biggest Efficiency Drop on an NBA Floor Is Not at the Arc
The restricted area shoots 65.8%, the rest of the paint 44.2% — a 21.6-point cliff, five times any gap at the arc, and the fall is finished five feet from the rim.
8 min read
Which Three Should You Shoot? The Wing, the Top of the Key, and 7,255 Attempts
Split 7,255 above-the-break threes by zone: wings 36.5%, top of the key 34.6% — the worst three on the floor. Match distances and the gap thins to 0.2 SE of noise.
8 min read
Does NBA Scoring Rise Through the Season? The 2023-24 Arc Is a Hump, Not a Climb
Combined scoring climbed from 223.0 in October to a 234.4 December peak, then fell to 222.6 by March. The season's arc is a hump — with an 8-point post-break cliff.
8 min read
The Blowout Artist and the Grinder: What a Team's Win Style Adds to Its Record
Nearly half of Boston's 64 wins were 15-point routs; Charlotte managed one all season. Win style recovers half the quality signal a W-L record throws away.
8 min read
Revenge Games Are a Myth (Probably): 258 Blowout Rematches, Measured
Blown-out teams came back 21 points better in the rematch. Against a baseline that stops remembering the blowout, the revenge premium is +1.3 points of noise.
8 min read
When Was the Playoff Field Actually Decided? 2023-24, Replayed Date by Date
Replay all 1,230 games in date order: the East's top eight by record froze on December 16; the West's last chair changed hands until April 12, two days out.
8 min read
Who Wins the Season Series? Every 2023-24 Head-to-Head, Audited
All 435 season series of 2023-24, audited: sweeps ran at 1.9x the coin-flip rate, yet a .100+ gap in final W% took the series outright just 68.4% of the time.
8 min read
Three Games in Four Nights: Does NBA Fatigue Actually Accumulate?
Teams on a 3-in-4 won 43.8% of 2023-24 games against normal rest, but stacking the third game on a back-to-back moved the margin 0.05 points. Fatigue doesn't stack.
8 min read
The Corner Three, Measured: What the Shortest Three Actually Pays
Corner threes hit 38.6% and pay 1.16 points per shot against 1.08 above the break. Fit accuracy to distance and the premium vanishes into geometry: 22 feet, priced.
8 min read
Is the NBA Left-Handed? What 25,000 Shots Say About Court Symmetry
Sided attempts split 50.3/49.7 and both sides shoot an identical 38.2%. The shooter's-corner myth, the one borderline signal, and why the floor has no grain.
7 min read
Do NBA Teams Bounce Back After a Blowout? The Response Game, Measured
Raw next-game win rates climb from 41% to 62% by previous margin — pure momentum, until you adjust for team quality and the effect collapses to r = +0.017.
8 min read
Do High-Scoring NBA Games Get Closer? What 1,231 Games Say
Across all 1,231 games of 2023-24, the correlation between total points and final margin is −0.02. Scoring volume simply doesn't predict competitiveness.
8 min read
Which NBA Teams Had the Biggest Home-Court Edge in 2023-24?
Measure each team's home win% minus road win% in 2023-24 and the spread runs from the Rockets at +32 to the Grizzlies at −22, around a +8.6 league average.
8 min read
How Many Wins Is a Net-Rating Point Worth?
Each point of net rating was worth 2.33 wins across 2023-24's 30 teams (r²=0.95), with the line through exactly 41 wins at zero. The margin is the standings.
8 min read
The Most and Least Consistent NBA Teams of 2023-24
The steadiest team of 2023-24 was Detroit (margin SD 12.0) — one of the worst; the wildest was Dallas (SD 18.0), which reached the Finals. Steady isn't good.
8 min read
The NBA Got More Efficient Without Shooting Much Better
Effective FG% jumped from 47.1% to 54.7% over 2004-2024 while raw accuracy crept from 43.9% to 47.4%. The efficiency boom came from the shot mix, not the aim.
8 min read
NBA Strength of Schedule: Why the Best Teams Get the Easiest Slates
Compute each 2023-24 team's schedule from who it played and the spread is 1.3 net-rating points a game — with weak West teams facing the hardest slates.
8 min read
How Much of an NBA Game Is Luck? Decomposing the Final Margin
Knowing exactly how good both teams are explains only ~26% of the variation in 2023-24 final margins. A game is a quarter signal, three-quarters noise.
8 min read
The Back-to-Back Penalty: What Tired Legs Cost in 2023-24
A tired team facing a rested one won just 41.9% of 2023-24 games (margin -2.8), but two tired teams are back to 50/50. Rest is a differential, not a state.
8 min read
How Often Does the Better Team Win in the NBA?
The better team by net rating won 67.9% of 2023-24 games — a near coin-flip (55%) in toss-ups, up to 81% in mismatches. It all hangs on the talent gap.
8 min read
Are NBA Win Streaks Real or Just Randomness?
Rebuild every 2023-24 win/loss sequence and compare it to weighted coin flips — the real streaks land almost exactly on the random null. Momentum isn't there.
8 min read
Does Offense or Defense Win in the NBA? What Net Rating's Two Halves Say
In 2023-24, offensive rating predicted wins better than defensive rating across all 30 teams (r 0.87 vs 0.75) — and net rating (r 0.98) settles the slogan.
8 min read
How Often Is an NBA Game Actually Close? The 2023-24 Margin Distribution
The most common NBA game of 2023-24 wasn't a nail-biter — it was a 20-point blowout. The real distribution of 1,231 final margins, and what it does say.
8 min read
Where the NBA Actually Shoots From: 25,000 Real Shots, Mapped by Zone
Drop 25,000 real shots onto the floor and 69% come from just two places — the rim and the arc — while the mid-range has collapsed to one shot in nine.
9 min read
Home-Court Advantage: What the 2023-24 Games Actually Show
Across 1,231 real 2023-24 games, home teams won 54% and outscored visitors by 2.2 points a night — an edge that hides almost entirely in the blowouts.
8 min read
Three-Point Defense: Can You Actually Defend the Three?
Teams obsess over guarding the arc, but opponent three-point percentage barely repeats. What defenses can control about the three, and what's just variance.
8 min read
Garbage Time: How It Quietly Distorts the Box Score
Stats keep counting after the game is decided. How garbage-time minutes inflate numbers and warp plus-minus — and how analysts filter them out.
8 min read
Lineup Data and the Five-Man Unit: Reading On/Off and Net Ratings
The box score stops at the player. Lineup data asks how five-man units actually perform — and why most lineup numbers are noisier than they look.
8 min read
The Three-Point Variance Problem: How Shooting Luck Swings Games
The same shots that win a title can lose a playoff series. Why a three-heavy league is a higher-variance league, and what that means for reading any single game.
8 min read
Rest vs. Performance: What the Data Says About Back-to-Backs and Load Management
Does a night of rest actually move the needle? We split a full season of games by days of rest to measure the real cost of the second night.
8 min read
Clutch Time, Quantified: Do “Clutch Players” Actually Exist in the Data?
The NBA defines clutch time precisely: last five minutes, margin within five. So we pulled it — and tested whether “clutch” is a real, stable skill.
8 min read