| Boxeo | 06/26 00:00 | - | Julio Cesar Martinez v McWilliams Arroyo | View | |
| Boxeo | 11/20 02:00 | - | Julio Cesar Martinez v McWilliams Arroyo | View | |
| Boxeo | 02/28 02:00 | - | McWilliams Arroyo v Abraham Rodriguez | View | |
| Boxeo | 02/28 02:00 | - | Julio Cesar Martinez v McWilliams Arroyo | View | |
| Boxeo | 02/25 02:30 | - | Carlos Cuadras v McWilliams Arroyo | View |
McWilliams Arroyo Acevedo (born December 5, 1985) is a Puerto Rican professional boxer who has held the WBC interim flyweight title since February 2021. He previously challenged for the IBF flyweight title in 2014, and the WBC and Ring magazine flyweight titles in 2016. As an amateur, Arroyo represented Puerto Rico in numerous international events. As of June 2021, Arroyo is ranked as the world's sixth best flyweight by BoxRec and tenth best by The Ring.