Definition of Flex

What does the term "flex" or "flex spot" mean in the world of fantasy football? What is the definition of the term "flex" in fantasy football?

In fantasy football, leagues will quite often use one or more "flex" spots.

A typical team structure might look like this:

QB
RB
RB
WR
WR
TE
Flex
Flex

With a "flex" spot, you can put in a wide receiver, running back or tight end.

So, for instance, with your two flex spots, you could put in Breece Hall and DeAndre Hopkins, or any other configuration of players, provided that they are a wide receiver, running back or tight end.

You can not put a quarterback into a "traditional" flex spot - in "superflex" leagues, however, you can put quarterbacks into this spot.

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Most fantasy football leagues will operate with at least one flex spot.