Southworth vs. Sobral and Riggs vs. Stewart official for next Strikeforce event on Nov. 21

Strikeforce officially announced via press release on Thursday evening that it will hold its next event on Friday, Nov. 21 from the HP Pavilion in San Jose, Calif. Two title bouts have already been announced for the show, including Bobby Southworth defending his Strikeforce light heavyweight title vs. Renato "Babalu" Sobral.