Not deep at all. They have 6'5 Saunders who has played sparingly and doesn't contribute much save being a space eater on the court. Then there's 6'3 freshman Stripling who is struggling to adjust to the college game. Tennessee's ability to play disruptive defense takes a serious nose dive when Key comes out of the game, even with Green available. The difference is Green was a strong rebounder and offensive threat. She was only 6'1, but strong and mobile. The other two players I mentioned don't bring anything near what she did to the game
If Key gets in foul trouble, they are vulnerable to pretty much anyone.