By Ryan Maquiρana

Robert Diaz, matchmaker for Golden Boy Promotions, has advised BoxingScene.com that unbeaten super middleweight George Groves will fight Francisco Sierra on the July 28 Robert Guerrero-Selcuk Aydin undercard in San Jose, Calif.

The 24-year-old Groves (14-0, 11 KOs) is co-promoted by Frank Warren and Golden Boy.  The native of London, England, has amassed impressive back-to-back wins in his last two outings of 2011.  A majority decision over James DeGale and a second-round stoppage of Paul Smith have landed the BBBofC British and Commonwealth 168-pound holder into bona fide contender statuts.

Sierra (25-5-1, 22 KOs) has lost two of three, but both defeats were to quality opposition in Jesus Gonzales (UD12) and Thomas Oosthuizen (TKO11).  The 24-year-old from Nayarit, Mexico, bounced back in June with a six-round virtual shutout of previously undefeated prospect Rogelio Ruvalcaba.

The bout will take place at the HP Pavilion, and Showtime will televise the main event.

Ryan Maquiρana writes a weekly boxing column for CSNBayArea.com.  He is a full member of the Boxing Writers Association of America and the Ratings Panel for Ring Magazine. E-mail him at rmaquinana@gmail.com , check out his blog at Norcalboxing.net, or follow him on Twitter: @RMaq28.

Tags: George Groves