(Portland, OR)  --  The Trail Blazers are in full evaluation mode as the NBA draft quickly approaches.  Portland held its first pre-draft yesterday.  Six prospects were in attendance, including Wake Forest forward John Collins and UCLA forward T.J. Leaf.  South Carolina guard Sindarius Thornwell and Villanova guard Josh Hart also took the floor.  The Blazers plan to hold five more workouts with roughly 35 players.