Colin Kaepernick did not throw the football for a second straight day at practice for the San Francisco 49ers as he deals with tightness in his throwing shoulder. Kaepernick handed the ball off four times in his one team drill and spent the rest of the time shadowing San Francisco's quarterbacks during a joint practice Friday against the Houston Texans in advance of the exhibition opener Sunday. The extremely limited practice came a day after Kaepernick got a scheduled day off to rest his shoulder as he works his way back from three offseason surgeries that prevented him from practicing during the offseason program. More...