A few notes from around the boxing world:
• Middleweight champion Canelo Alvarez's sixth-round knockout of the year contender against Amir Khan last Saturday night in the main event of the first boxing card at the new $375 million T-Mobile Arena in Las Vegas, generated a live gate of $7,417,350, according to figures released by the Nevada State Athletic Commission. That total came from 13,072 tickets sold, far short of a sellout. The Alvarez-Khan gross places it 34th-best in Nevada history. It is sandwiched between the $7,486,400 live gate of the Felix Trinidad-Fernando Vargas junior middleweight championship fight in 2000 and Trinidad's junior middleweight title victory against David Reid earlier in 2000, which grossed $7,329,500.
• Former unified lightweight titleholder Juan Diaz, who returned to knock out Fernando Garcia in the ninth round on March 19 in his first fight following surgery to repair his torn left rotator cuff, will fight for the second time on his comeback Aug. 6. Diaz (41-4, 20 KOs), 32, of Houston, will headline a Top Rank "Solo Boxeo Tecate" card on UniMas at the Casino del Sol in Tucson, Arizona, Top Rank vice president Carl Moretti told ESPN.com. Diaz will face Cesar Vazquez (27-3, 16 KOs), 30, of Mexico. Vazquez has won two fights in a row after a three-fight losing streak -- all by knockout. Diaz was set to challenge for a vacant lightweight world title before his injury but had to pull out. A win over Vazquez will keep him on the path to another one. "I expect another performance that will only show that he is ready for a top 10 lightweight or even a world title challenge," Moretti said. "So far, so good with his shoulder. That's the report I have."
• Middleweight titlist Daniel Jacobs (31-1, 28 KOs), 29, of Brooklyn, New York, finished last year by knocking out neighborhood rival and former titlist Peter Quillin in 85 seconds on Dec. 5. After a longer-than-expected layoff, Jacobs is due back to defend his secondary title for the fourth time on July 30. Although Jacobs does not yet have an opponent, he is penciled in to defend on Showtime-televised co-feature of the Leo Santa Cruz-Carl Frampton featherweight title bout at Barclays Center in Brooklyn. There has been discussion that Jacobs might face former titleholder Andy Lee, but that is unlikely given how much that fight would cost on an already expensive card because of the top-notch main event. One possibility would be for Jacobs to face former junior middleweight titleholder Sergio Mora in a rematch. Jacobs knocked out Mora in the second round last August because Mora broke his ankle when he got knocked down and could not continue.