Erik Horne[img]2431467[/img] Oklahoma State guard Markel Brown and Oklahoma guard/forward Cameron Clark will both participate in the 2014 Portsmouth Invitational Tournament, Wednesday-Saturday in Portsmouth, Va. The four-game, 12-day tournament serves as a showcase for the top 64 senior draft prospects, with representatives from every NBA team in attendance. Brown (6-foot-3, 190 pounds) averaged 17.2 points, 5.3 rebounds, 2.9 assists, 1.0 blocks and 1.0 steals per game in his final season at OSU.