Another ‘Horn Enters Draft: Texas’ worst-case scenario may be developing. Sophomore point guard Daniel Gibson announced Tuesday that he will enter the draft without the assistance of an agent, so he could return to school. His decision — at least for now — puts LaMarcus Aldridge, P.J. Tucker and Gibson among Texas’ underclassman defections. With seniors Brad Buckman and Kenton Paulino graduating, Texas could potentially lose all of its starting lineup. Gibson averaged 13.4 points, 3.6 rebounds and 3.1 assists per game for the Longhorns. Although he needs to work on his shooting, he could be one of the better point guards in a relatively weak draft. [4/26/06]