Most tennis balls suck so I’m reviewing all of them, one by one. Starting with the Dunlop Grand Prix extra duty. Bought these myself… Bounce out of the can: 24in from a 3ft drop Bounce after 2.5 hrs: 24in surprisingly Weights: 58g / 56g / 57g They barely fluffed up, which is nice, but they get slower and slower until you physically cannot hit a winner. Ask Kevin about the lobs. B tier. Same rating as my YouTube video. Still a good ball, just not amazing. What ball should I do next? #tennis #tennisballs #usta #utr #usopen