Notes: Luis Ortiz's viewership on the rise

A few notes from around the boxing world:

• Heavyweight destroyer Luis Ortiz's sixth-round knockout of Tony Thompson on Saturday night in Washington, D.C., averaged 740,000 viewers on HBO for the live airing, with a peak of 807,000 viewers, according to Nielsen Media Research. That is a 20 percent rise in viewership from Ortiz's previous HBO appearance in his exciting seventh-round knockout of Bryant Jennings on Dec. 19, which averaged 616,000 viewers. Welterweight Jessie Vargas' hard-fought ninth-round knockout of Sadam Ali to win a vacant world title in the co-feature averaged 726,000 viewers with a peak of 848,000 viewers. On Showtime's competing card, junior middleweight contender Julian "J Rock" Williams' seventh-round knockout of Marcello Matano in a title elimination bout averaged just 311,000 viewers.

• Top Rank announced that it has signed 20-year-old Puerto Rican junior featherweight prospect Jean Carlos "Chapito" Rivera (5-0, 3 KOs) to a multi-year promotional deal. "This is a dream come true for me. I feel very happy," said Rivera, who now lives in Orlando, Florida. "The hard work and all the sacrifices that we have made all these years are already paying off. I'm a fine boxer. I use angles, I use movements, and I use my legs. I consider myself as an old-school fighter. Whatever I have to do to win, I will do it. I expect to fight at least five times a year. I'm going to continue working hard in the gym to keep opening doors and reach the opportunity to fight for a world title."

• Brian Kweder, the former ESPN programming executive who was the network's point person for its deal with Premier Boxing Champions, has been hired by PBC as a consultant to serve as a liaison between the company and its various television partners as it looks to organize its schedule and solidify the matchups.