The American Ultimate Disc League (AUDL) is one of the two mens’ professional ultimate leagues up and running right now (the other is Major League Ultimate). There are some differences in the rules used in AUDL and the MLU—double team coverage is allowed and the fields are bigger.
No one is getting rich playing ultimate yet (most pro players have their travel expenses covered and receive a small per-game stipend), but it’s a start!
FMS Ultimate 