On this week's Mailbag, Gill Gross answers your comments, including: why are players complaining about the balls in Cincinnati, saying something about Rafael Nadal, the top-10 serves among the top-10 players, is Novak Djokovic right when he says tennis is all mental, what determines a good matchup vs. a bad matchup for Daniil Medvedev, how would I train if I had to play a pro, why hasn't Holger Rune won on outdoor hardcourts, is there something wrong with Medvedev's serve, why aren't there many lefties right now, what is Alexei Popyrin's ceiling and what can Alex de Minaur do to reach the next level.Support this podcast: https://podcasters.spotify.com/pod/show/monday-match-analysis/support