Notes: Viewership numbers in for Frampton-Santa Cruz

The featherweight title bout between Carl Frampton and Leo Santa Cruz in July is a candidate for fight of the year. Edward Diller/DiBella Entertainment

A few notes from around the boxing world:

• The fantastic fight of the year candidate between Carl Frampton and Leo Santa Cruz, in which Frampton won a featherweight world title on Saturday night at Barclays Center in Brooklyn, New York, averaged 480,000 viewers and peaked at 549,000 viewers, according to Nielsen Media Research. It is the highest-rated bout on Showtime Championship Boxing so far this year. The co-feature, junior welterweight Mikey Garcia's return from a 2½-year layoff to knock out Elio Rojas, averaged 427,000 viewers, and the opening fight, Tony Harrison's knockout of Sergey Rabchenko in a junior middleweight title eliminator, averaged 299,000 viewers.

Part of the telecast was on opposite HBO's replay of the Terence Crawford-Viktor Postol junior welterweight title unification fight from the previous week on HBO PPV. The replay averaged 378,000 viewers. Friday night's light heavyweight championship fight between Adonis Stevenson and Thomas Williams Jr. averaged 531,000 viewers on Spike.

• Oscar Valdez (20-0, 18 KOs), who won a vacant featherweight title against Matias Rueda in an explosive second-round knockout on July 23 on the Terence Crawford-Viktor Postol undercard, was born in Mexico but grew up in Tucson, Arizona. He will return to his childhood home to attend the card that his promoter, Top Rank, is putting on Saturday night (UniMas, 11 ET/PT) at Casino Del Sol. It is headlined by former lightweight titleholder Juan Diaz against Cesar Vazquez, but Valdez will be recognized during the show.

"I have been dreaming of this day since I was 8 years old," Valdez said. "I have always wanted to return to Tucson as a world champion. Boxing is my passion. Dreams do come true."

• Junior lightweight contender Claudio Marrero (20-1, 14 KOs) will face Derrick Murray (13-0-1, 5 KOs) and unbeaten female featherweight Heather Hardy (17-0, 4 KOs), of Brooklyn, New York, 34, will face Shelly Vincent (18-0, 1 KO), 37, of Providence, Rhode Island, in a long-simmering feud fight on Aug. 21 at the Ford Amphitheater at Coney Island Boardwalk in Brooklyn, Premier Boxing Champions announced Thursday. Both bouts will be televised on NBC Sports Net (9 p.m. ET, same-day tape). The fights are part of the card headlined by welterweight contender Errol Spence Jr.'s world title elimination fight against Leonard Bundu, which will air live on NBC beginning at 5 p.m. ET. Marrero, 27, of the Dominican Republic, has won six fights in a row since a decision loss to Jesus Cuellar in an interim title bout in August 2013. Murray, 28, of St. Louis, will be taking a huge step up in competition.