Tickets for the super middleweight main event between Julio Cesar Chavez Jr. and Brian Vera slated for Sept. 7 at Staples Center (on HBO) will go on sale Friday at 10 a.m.

Chavez (46-1-1, 32 KOs) is coming off a unanimous-decision loss to Sergio Martinez, who took Chavez’s middleweight title on Sept. 15 at Thomas & Mack Center in Las Vegas. Afterward, Chavez tested positive for marijuana and was fined and suspended nine months by the Nevada State Athletic Commission.

Vera (23-6, 14 KOs) is from Austin, Texas. He is on a four-fight winning streak.

Tickets are priced at $50, $75, $100, $150 and $250. They can be purchased by calling 888-929-7849, by going online at www.axs.com or through the Staples Center box office.