Justin Gaethje The lineup for “WSOF 19: Gaethje vs. Palomino” has been finalized with several additional undercard fights booked for the event. WSOF 19 takes place March 28 at Comerica Theatre in Phoenix. The four-fight main card will air live on NBCSN at 9 p.m. ET with eight fights scheduled for the prelims, which begin at 6 p.m. ET and stream on MMAjunkie