Most recent 4 year stretch is very comparable to 2010 - 2013 when his QB rating went from 111, 106, 99 to 87 (33 - 36 years old) He then followed it with an incredible stretch. Like all players, Brady is more effective when he has better teammates. He has clearly been more banged up last couple of years than previously and maybe that is age related (though younger players like Rogers have missed time so who knows) My guess is that he is very capable of putting together a terrific year and that the team is worse in the short term because of losing him. Am fine with the Pats moving on due to finances and to try and set themselves up for the future but I do believe it hurts them in 2020.