Hit rate in NBA props: what it measures and why it isn't enough

Hit rate is the share of games in which the player beat today's line. If a player went over 24.5 points in 7 of his last 10 games, his L10 hit rate is 70%.

Why it misleads

• Small sample: 10 games swing a lot. A 7 for 10 is consistent with a true probability of 50%.
• Different context: minutes, opponents and missing teammates change from game to game.
• The line adapts: when a player is hot the line goes up, and the hit rate on the new line starts from scratch.

What the data says

We tested on 238,000 NBA lines (May 2023 to November 2026, 12 sportsbooks) whether a weighted hit rate (last 5, last 10, season, against the same opponent, home or away) helps predict the result beyond what the price already says. Answer: no. The coefficient was 0.023 with p = 0.56, and forecast accuracy was identical with or without hit rate.

That is why on Clutch hit rate is shown as descriptive data, always with the number of games it is based on, and never as a signal.