Floor, as you might well expect, is the opposite of ceiling when used in fantasy football discussion.
While ceiling is the highest number of points you can expect a player to contribute to your side, floor is the worst case scenario – how few points your player would still be able to score if they had a terrible game.
Some fantasy football stars are more reliable than others, scoring a consistent number of points, so you have a good idea of what you can expect them to add to your team if selected.
This would mean they have a high floor and it can be a good idea to have some players of this ilk to guarantee you are going to get at least a decent number of points on the board from them.
Low floor means that a fantasy football player has the potential to score virtually zero points for your side – for example they might well be in and out of their club team and could be left out completely – so they can be very risky players to select.
Of course, risky picks always come with the positive that they offer a high differential, so sometimes it is worth taking the gamble if you believe they have a high enough ceiling to be worth adding them to your squad.
High floor players are a must for double-up and triple-up contests where you want to be adding players who are low-risk, due to their reliability and consistency in scoring good levels of points.
At the most basic level in daily fantasy football, players with high floors should be preferred to players with low floors, but of course your team selection will usually depend very much on the type of daily fantasy tournaments you are planning to enter.
There is lots of data on ceiling and floor statistics online if you want to research your picks.