By Keith Idec

An average of 468,000 viewers watched Showtime’s broadcast of the Shawn Porter-Andre Berto welterweight fight Saturday night from Brooklyn.

The previous main event Showtime aired in prime time, Adrien Broner’s split-decision defeat of Adrian Granados, drew an average of 779,000 viewers February 18 from Cincinnati. Three weeks earlier, Leo Santa Cruz’s majority-decision defeat of Carl Frampton in their featherweight championship rematch, averaged 587,000 viewers from Las Vegas.

The decline in ratings for the Porter-Berto show, a rarity in what thus far has been a strong 2017 for Showtime’s boxing programming, could’ve partially been attributable to competition from NBA playoff games that generated strong ratings while airing at the same time.

The San Antonio-Memphis game, which began at 8 p.m. ET on ESPN, averaged 3.4 million viewers. The Golden State-Portland game, which started at 11 p.m. ET on ESPN, drew an average viewership of 4.3 million.

The Porter-Berto broadcast began at 9:30 p.m. ET and ended just before 11:20 p.m. ET.

Showtime’s doubleheader began with Jermell Charlo’s spectacular sixth-round knockout of Charles Hatley at Barclays Center. An average of 401,000 viewers watched Houston’s Charlo (29-1, 14 KOs) make the first defense of his WBC super welterweight title against Dallas’ Hatley (26-2-1, 18 KOs), his mandatory challenger.

Porter (27-2-1, 17 KOs), of Akron, Ohio, stopped Berto (31-5, 24 KOs), of Winter Haven, Florida, in the ninth round of the main event. His victory in their WBC elimination match made Porter the mandatory challenger for WBC welterweight champion Keith Thurman (28-0, 22 KOs, 1 NC), who beat Porter by unanimous decision in an entertaining battle June 25 at Barclays Center.

Keith Idec is a senior writer/columnist for BoxingScene.com. He can be reached on Twitter @Idecboxing.