Injury news is the single biggest driver of NBA DFS decisions, because it changes who plays and for how many minutes. The official NBA injury report uses five statuses (Out, Doubtful, Questionable, Probable and Available), and each one means something different for your lineup. In our own measurement of 154 game days, the 5:30 PM ET status was a strong guide for Out, Doubtful and Probable, and close to a coin flip for Questionable.
The official statuses
The NBA requires teams to report player availability. Each player listed gets one of these statuses. They are not a promise, but they are a signal.
- Out: not expected to play.
- Doubtful: unlikely to play.
- Questionable: uncertain, could go either way.
- Probable: likely to play.
- Available: cleared to play.
When reports arrive
Teams update their injury reports through the afternoon on game days. Our measurements below use the report as it stood at 5:30 PM ET. After that, a team can still change a player’s status, and a surprise can come at any time up to tip-off, including when players are warming up.
That timing matters for DFS. If you build lineups at noon, you are working with older information than someone who builds after 5:30. If a contest locks at 7:00 PM ET, you have a narrow window in which the most reliable report is available.
When two reports conflict, the newest dated one should win over an older one. It sounds obvious, but a stale tweet or an old status on a stats page can easily hide a more recent update.
Be careful with vague wording. Terms like load management, rest or return-to-competition reconditioning can show up in a report. Read the status and the reason together, and when a team gives no reason, treat the status at face value.
What our data shows about the 5:30 PM ET report
TipoffLab measured how often players actually played, based on the official NBA injury reports across 154 game days. These are our own measurements, not a guarantee. They describe past games, and the future can differ.
- Out at 5:30 PM ET: played 0.2% of the time.
- Doubtful: played 1.7% of the time.
- Questionable: played 49% of the time.
- Probable: played 92% of the time.
What those numbers mean for you
Treat Out and Doubtful as out. The measured play rates were close to zero. Building a lineup around a Doubtful player is a large gamble.
Treat Questionable as a coin flip. In our sample, Questionable players played about half the time, so either avoid a Questionable player or have a plan for the nights he sits. Late swap helps here if the player’s game is later in the night.
Probable players mostly played, but not always, so it is still worth checking for last-minute changes.
We also measured what happens when a Questionable or Probable player does play. He usually plays his normal minutes. In other words, the status mostly tells you whether he plays, not how much.
Minutes redistribution to teammates
When a rotation player is out, his minutes do not disappear. They go to teammates, usually the next player at his position, but sometimes to a larger group. Those teammates often score and rebound more because they have more time on the floor.
In our measurement, teammates gained meaningfully mainly when the absence was late or surprising. We did not measure why. One likely explanation is that news known early is already reflected in salaries, projections and the teammates’ recent minutes, so there is less left to gain. In practice, treat a player ruled out two days ago as old news, and look harder at the teammates of a player ruled out an hour before lock.
TipoffLab DFS re-projects as injury and lineup news lands, and redistributes a scratched player’s minutes to teammates. You should still check the roster yourself, since each coach uses his bench differently.
Late scratches
A late scratch is a player who was expected to play but is ruled out close to tip-off. These are the hardest to handle because there is little time to react. They are also the main reason late swap matters.
To reduce the damage, avoid stacking too many questionable players in one lineup, and consider a plan B for each. Also keep a few cheaper players with solid minutes in mind in case you need to fill a hole quickly.
A simple news routine
Check the report on the morning of the slate, again after 5:30 PM ET, and again just before lock. Note which players moved from Questionable to Out, since those changes often create the biggest value plays. Then check whether the news was known early or arrived late, since in our measurement teammates gained mainly on late news.
Also watch the second-order effects. If a starting guard is out, the backup guard gains minutes, but a wing may handle the ball more and see his assists rise. Think about who takes the shots and who takes the extra rebounds, not only who takes the vacated spot.
Projections are estimates. Injury news makes them better, but it never makes them certain.
See it in TipoffLab DFS
We watch injury and lineup news all afternoon. When a player is ruled out, his minutes go to the teammates who'll actually play them, and the team is re-projected: minutes, points, range and ownership.
- 6:00 PM
Trey Murphy III NOP
Questionable → Out
Ruled out vs Utah (knees). - 10:30 AM
Trey Murphy III NOP
Questionable
Questionable on the morning injury report.
New Orleans minutes: Matkovic 19.7→24.0 · Bey 28.0→32.3 · Mathurin 14.1→17.3 · Jones 18.2→20.9
- BOS Jayson Tatum
- MIN Anthony Edwards
- IND Tyrese Haliburton
- TOR Kawhi Leonard
- NOP Trey Murphy IIInew
- OKC Chet Holmgren
- IND Ivica Zubac
- BOS Payton Pritchard
- WAS Alexandre Sarr
- IND Kelly Oubre Jr.
- WAS Bilal Coulibaly
FAQ
How often does a Questionable player actually play?
In TipoffLab’s own measurement of official NBA injury reports across 154 game days, players listed Questionable at 5:30 PM ET played 49% of the time. That is roughly a coin flip.
Should I ever play a Doubtful player?
In our measurement, Doubtful players played 1.7% of the time at the 5:30 PM ET report. Most players treat Doubtful as Out.
Which report is the most reliable?
Generally the newest dated report. A later update should replace an earlier one, including when an old status is still showing on a stats page.
Do teammates always benefit when a starter is out?
Not always. In our measurement, teammates gained meaningfully mainly when the absence was late or surprising. When the absence was known earlier, there was less extra to gain.
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