Amparo dropped Azarcon twice in the third round with body shots. In the fourth round, the 25-year-old Amparo knocked Azarcon down for the third time with a right uppercut to the midsection. He then finished off Azarcon with a left hook to the ribs at the 2:20 mark.
Amparo improved to 13-4-1 with three knockouts, while Azarcon fell to 17-7-1 with six knockouts.
Meanwhile, Shane Gentallan suffered his first career defeat after losing to World Boxing Council Asian Silver light flyweight champion Dian Xing Zhu.
Zhu ended Gentallan’s night after stopping him at the 2:59 mark of the final round.
Gentallan fell to 7-1 with four knockouts, while Zhu improved to 8-1 with seven knockouts.
In the undercard, Angilou Dalogdog (7-0, 2 KOs) outclassed Dennis Endar (4-1-1, 3 KOs) by unanimous decision, Reymart Tagacanao (5-0, 5 KOs) continued his knockout streak after a first-round demolition of Ruel Julian (4-5, 1 KO), Gerwin Asilo (5-0, 1 KO) beat Ariel Antimaro (4-2-2, 2 KOs) by unanimous decision, Christian Balunan (6-0, 4 KOs) scored a third-round stoppage of Charlie Malupangue (9-9-4, 6 KOs), Pablito Balidio (8-3-3, 2 KOs) defeated former world title challenger Vergilio Silvano (21-12-2, 12 KOs), Jason Tinampay (14-17-1, 11 KOs) walked away with a unanimous decision over fellow veteran Marjhun Tabamo (10-20-4, 2 KOs) and Niño Rio Saoy (2-0, 1 KO) stopped Dave Barlas (5-7-1, 3 KOs) at the end of the third round in the show’s curtain-raiser. (EKA)