The fight card for Friday’s Strikeforce Challengers 15 event is now complete with the addition of four preliminary-card fights.
They include 150-pounders Rafael Rios vs. Anthony Avila, 130-pounders Bobby Escalante vs. Raul Sandoval, lightweights Tristan Arenal vs. Tommy Peterson, and flyweights Adam Antolin vs. Ronald Carillo.
Strikeforce Challengers 15 takes place at Stockton Arena in Stockton, Calif.