What is DraftKings late swap, how does it work, and how do you use it to win more in NBA and MLB DFS.
DraftKings late swap is one of the most powerful features on the platform — and one of the most underused. If you are not using it, you are giving up a significant edge every single slate.
Late swap allows you to edit your DraftKings lineups after the contest has started, as long as the player you are swapping out has not yet played. In multi-game slates with different game times, this means you can update lineups based on late-breaking news right up until the last game locks.
Example: A 7-game NBA slate starts at 7PM ET. If a player in the 10:30PM ET game is scratched at 9PM, you can still swap them out — even though the slate has already started.
The lock rule
Once a player game starts, those players are locked. You cannot swap them out. You can only edit players whose games have not yet started.
Salary cap still applies
Your updated lineup must still be under the salary cap. If your replacement costs more, you need to adjust elsewhere.
Position eligibility still applies
Your replacement must be eligible for the slot you are filling. A player with PG/SG eligibility can fill a G slot but not an SF slot.
CSV upload is the fastest method
For 5+ lineups, manually editing each one is too slow. Download your entries CSV, make changes, re-upload. Updates all lineups at once.
NBA late swap windows are shorter — games start closer together. You typically have 30-60 minutes between early and late games. MLB late swap windows are longer because game times are more spread out, but there are more games and more potential scratches.
Both sports reward the same skill: fast, accurate information processing and the ability to update multiple lineups quickly.
Most casual DFS players set their lineups hours before lock and never look again. When a star player scratches 45 minutes before the late games, those players are stuck with a dead lineup.
Sharp players monitor for scratches, have a process ready, and update their lineups in minutes. The field shrinks dramatically among active players in the late swap window — and the players who act correctly have a massive overlay.
THE NUMBERS
In a 1000-person GPP, if 600 players miss a late scratch and you correctly swap — you are effectively competing against 400 people for the same prize pool. That is a 33% field reduction from one piece of information.
The players who win at late swap consistently do three things: they monitor news in real time, they have a clear process for evaluating replacements, and they execute fast. The last part is where most players fail — manually editing 10+ lineups takes too long.
AUTOMATE YOUR LATE SWAP
Late News Lab detects OUT players across all your lineups automatically, generates salary-optimized swap recommendations, and exports a DK-ready CSV in 60 seconds. Works for NBA and MLB. $4.99/slate.
Try Late News Lab →