Article Photos: Bobcats exercise options on Walker, Biyombo



Charlotte Bobcats' Bismack Biyombo (0) guards Miami Heat's Chris Bosh (1) during the second half of an NBA preseason basketball game in Raleigh, N.C., Tuesday, Oct. 23, 2012. Miami won 98-92. (AP Photo/Gerry Broome)

Charlotte Bobcats' Bismack Biyombo (0) guards Miami Heat's Chris Bosh (1) during the second half of an NBA preseason basketball game in Raleigh, N.C., Tuesday, Oct. 23, 2012. Miami won 98-92. (AP Photo/Gerry Broome)