Here is the list I could compile of 18-19 year old freshmen to lead their teams to Final 4 (scoring leaders):
Knight (2011, 17.3 ppg, 4 rpg, 4.2 apg, 42% FG, 80% FT, 38% 3FG)
Love (2008, 17.5 ppg, 10.6 rpg, 1,9 apg, 56% FG, 77% FT, 35% 3FG)
Oden (2007, 15.7 ppg, 9.6 rpg, 3.3 bpg, 62% FG...