Top Rank chief executive Bob Arum was critical of two boxing judges for how they scored the championship fights of Manny Pacquiao and Nonito Donaire Jr. at the Thomas & Mack Center in Las Vegas on Saturday.

Donaire surrendered his WBO super bantamweight belt to Jessie Magdaleno after he was beaten 112-116, 112-116, and 110-118.Pacquiao, meanwhile, became the new WBO welterweight champion after beating Jessie Vargas, 114-113, 118-109, and 118-109.

Nonito “The Filipino Flash” Donaire Jr. lost to Jessie Magdaleno to claim the WBO Junior Featherweight belt in Las Vegas, Nevada Sunday morning, November 6 (Philippine time)

Jessie Magdaleno hits Nonito Donaire, of the Philippines, during their WBO junior featherweight title boxing match Saturday, Nov. 5, 2016, in Las Vegas. (AP Photo/Isaac Brekken)

Jessie Magdaleno hits Nonito Donaire, of the Philippines, during their WBO junior featherweight title boxing match Saturday, Nov. 5, 2016, in Las Vegas. (AP Photo/Isaac Brekken)

Magdaleno, who dominated Donaire through most of the rounds, won via unanimous decision—with 116-112, 116-112 and 118-110 from the judges.

The American remains undefeated, now earning 24 wins.

Donaire, on the other hand, now has 4 losses while retaining his 37 wins.

The Donaire-Magdaleno bout is one of the undercard matches of the Manny Pacquiao-Jessie Vargas clash for the WBO Welterweight championship at the Thomas and Mack Center.