On this week's post-ATP Finals Mailbag, Gill Gross answers your comments including: are Carlos Alcaraz and Jannik Sinner closing the gap on Novak Djokovic, will Djokovic focus primarily on clay next year, when might Rafael Nadal begin his comeback, when did each of the Big 3 play their peak levels, is Sinner in danger of going down a similar path as Felix Auger-Aliassime after a hot indoor season, did Nick Kyrgios do a good job in his commentary debut for Tennis Channel, what were Sinner's main improvements this year, what should we expect from Break Point Season 2 and how does Djokovic use mental strategies to stay motivated.