The announcers today went on at length but how young Kentucky's team was and they did mention that Tennessee had a young team also. I thought I would take a look and compare the youth of each team's roster.
Kentucky's top 12 players includes three freshmen, four sophomores, three juniors, and two seniors.
Tennessee's top 12 players includes four freshmen, four sophomores, 3 juniors, and one senior.
Assigning a points value of 1 point for freshman, two points for sophomores, 3 points for juniors, and four points for seniors Kentucky has 28 points and Tennessee has 25 points. Tennessee is a tad bit younger than Kentucky.
Although I haven't analyzed every team Tennessee has faced, Tennessee has been younger than every team they faced that I've looked at.