Richt earned a 145-51 record at UGA and 26-13 at Miami:

I believe, players from this part of the country (up north) are more docil than those from FL. CMR is a DGD and forever will be. His thinking clashed with some players down at the U. Coral Gables school is a tough area to coah and takes a tough person to make it click. Perhaps, a Gruhn could do fine there, but there are so many wrong things going on at the U, that it will take a while for it to get back to prominence and that's why CMR decided that leaving was the best for everybody involved.

http://southernpigskin.com/acc/the-legacy-of-mark-richt/

The Legacy of Mark Richt
By B.J. Bennett
31 December 2018

https://allfortennessee.com/2018/12/30/tennessee-football-richt-decline/

University of Tennessee Football: Mark Richt the most responsible for Vols decline
By Caleb Calhoun
30 December 2018