But by the end of 10 action-packed three-minute rounds, 'The Real Deal' showed and proved she was levels above in ring savvy, punch precision and power in retaining her WBA and WBO unified featherweight world championship via a dominant, hard-fought unanimous decision. Judges inside the Coliseo Roberto Clemente in San Juan, Puerto Rico, and live on DAZN, scored it 98-92, 97-93 and 97-93 all in favor of Serrano on Saturday night.

The 37-year-old Puerto Rican sensation and seven-division world champion took a 22-year-old undefeated fighter in Tellez and dictated the terms of the bout behind a steady buffet and fighting flow of punches, anchored by the jab with powerful potshots and pounding body work added to the mix.

Serrano (48-4-1, 31 KOs) had to overcome bad swelling under her right eye in the fifth round but never stopped moving forward and cutting off the ring on Tellez (13-1, 5 KOs) who stood tough over many sequences and exchanges, even catching the champ with stinging overhand lefts. Still, despite owning a big lead, Serrano stalked forward and attempted to get her 32nd career knockout which would have tied Christy Martin's mark.

Here is how the entire Amanda Serrano vs. Reina Tellez fight and main card went.

Results and headlines

• Amanda Serrano beats Reina Tellez by unanimous decision to retain WBA and WBO unified featherweight world titles
• Stephanie Han defeats Holly Holm via unanimous decision to retain WBA lightweight title following doctor's stoppage due to accidental headbutt opening cut on Han in seventh round
• Krystal Rosado dominates Tania Walters by unanimous decision shutout 
• Jake Paul speaks, gives update on recovery from broken jaw
• Alexis Araiza beats Ebanie Bridges via unanimous decision
• Jonathan Gonzalez defeats Yankiel Rivera by unanimous decision to win WBA interim flyweight world title (Prelims)