LOS ANGELES – Unbeaten featherweight contender Mark “Magnifico” Magsayo won a split-decision over Rigoberto Hermosillo in the FS1 PBC Fight Night main event and on FOX Deportes Saturday night from Microsoft Theater in Los Angeles.

Representing the Philippines, Magsayo hit Hermosillo with power punches early and often, peppering his opponent with heavy shots with both hands. Despite the connections, Hermosillo was never deterred, outpacing Magsayo’s total punch output with a consistent attack to the body.

Hermosillo had the advantage in total punches landed (181-136) and thrown (856-417), according to CompuBox. However, Magsayo’s shots appeared to do more damage, while he also landed at a more accurate clip, connecting on 33% of his shots to Hermosillo’s 21%.

Magsayo stunned Hermosillo with a short left hand from close range early in round nine, which left Hermosillo on shaky legs. Although Hermosillo hit the canvas shortly after, it was ruled a slip by referee Jack Reiss. Magsayo was able to control the rest of the round and escape the 10th and final frame unscathed to earn the decision with scores of 96-94 for Hermosilla, and 100-90 and 96-94 for Magsayo.

In the co-main event, top welterweight prospect Paul Kroll (8-0, 6 KOs) remained unbeaten with a unanimous decision over rising prospect Luke Santamaria (11-2-1, 7 KOs) after 10 rounds of action.

The clash of 147-pound prospects was a battle of Kroll’s power shots and technical skill against the activity and difficult movement posed by Santamaria. Kroll showed a solid and steady jab throughout the fight, but Santamaria was able to successfully work around it at times and find angles for his power shots.

In round two, Santamaria hit Kroll with a left hook to the body that caused Kroll to temporarily retreat and put him in survival mode for the remainder of the round. Kroll learned from the exchange and showed a better control of the distance, especially during the second half of the fight.

While Santamaria occasionally vexed Kroll by consistently switching between orthodox and southpaw stances, Kroll’s mixture of right uppercuts and straight right hands proved more impressive in the judges’ eyes, as Kroll was awarded the decision by scores of 99-91 twice and 96-94. Santamaria edged Kroll’s total punches landed 81 to 65, throwing 435 against Kroll’s 401.

Twin prospects Chávez and Ángel Barrientes both scored victories in their televised debuts Saturday night. Chávez Barrientes (4-0, 3 KOs) delivered a unanimous decision triumph over Ivan Varela (3-3, 1 KO) at the end of their six-round super bantamweight duel.

This fight was defined by big exchanges on the inside, with Chávezestablishing his counter left hook as a weapon he would utilize from start to finish. The 18-year-old Chávez was the more accurate puncher, connecting on 29% of his punches, compared to Varela’s 21%.

Varela had moments of success, notably cracking Chávez with a big right hand in round four, but was unable to ever seriously hurt his opponent. Chávez closed the show strong, out working and out landing Varela throughout the final rounds to ensure his victory.

Chávez triumphed by scores of 60-54 twice and 59-55 to earn the win and remain unbeaten Saturday night.