On this edition of the mailbag---- Is Novak Djokovic's forehand really worse than Roger Federer and Rafael Nadal's, who are the favorites for US Open and French Open 2020, how quickly is Dominic Thiem improving, should Nadal skip the US Open, will the schedule favor NextGen players, are Dimitrov and Raonic primed for a comeback, where does Federer rank among all-time baseliners, what will tennis television do to supplement for no crowd viewing, plus breakdowns of Stefanos Tsitsipas and Andy Murray, and the most underrated aspect of the Big Three's games.