Amanda Serrano’s next fight is set, as she’ll defend her featherweight titles against Brenda Carabajal on Aug. 6. Amanda Serrano’s next fight is fully set, as the WBC and WBO featherweight titleholder announced on social media that she will be facing WBO interim titlist and mandatory challenger Brenda Carabajal. The fight will be featured on the Aug. 6 Showtime pay-per-view headlined by Jake Paul, which is being marketed as a double main event with Serrano. Paul is still expected to face Tommy Fury, but that is not yet official. Carabajal was one of the expected contenders for the slot, in…