Victor Ortiz will NOT be boxing this weekend after getting arrested for rape ... so says his opponent, John Molina, Jr. ... who just announced the fight has been scrapped.
Ortiz was arrested Tuesday and charged with 3 counts of felony sexual assault -- including rape, oral copulation and digital penetration -- stemming from an alleged incident that took place inside of a home in Oxnard, CA back in March.
Molina and Ortiz were scheduled to headline a Premiere Boxing Championship on FS1 on Sunday -- but Molina just issued a video statement saying it's off.