By many rankings, these 3 were the highest rated players not to be drafted--
Louis Amundson 6-8 221 SF UNLV Sr.
Kevin Pittsnogle 6-10 255 PF WV Sr.
Allan Ray 6-2 204 SG Villanova Sr.
Other notables-
Eric Williams 6-8 285 PF/C Wake Forest Sr.
Pops Mensah-Bonsu 6-9 232 PF GW Sr.
Nik Caner-Medley 6-8 234 SF Mary. Sr.
Yemi Nicholson 6-11, C, Denver
Bobby Jones, SF, Washington
Jose Juan Barea, PG, Northeastern (rated by some as the 2nd or 3rd best point guard)
Carl Krauser, PG, Pittsburgh (too bad, that's justice for his unprovoked elbow to Tony Bennett)