Australian Nick Kyrgios winces in pain after suffering a shoulder injury on Wednesday. pic/afp
Australian Nick Kyrgios winces in pain after suffering a shoulder injury on Wednesday. Pic/AFP

Nick Kyrgios gave another scathing assessment of his dedication to tennis after losing in the first round of the US Open. Kyrgios, 22, hurt his right shoulder in the third set of his clash against fellow Australian John Millman and fell to a 6-3, 1-6, 6-4, 6-1 defeat.

Asked afterwards if he would be continuing his partnership with coach Sebastien Grosjean, Kyrgios said: "I'm not good enough for him. He's very dedicated. He's an unbelievable coach. He probably deserves a player that is probably more dedicated to the game than I am. He deserves a better athlete than me. "I'm not dedicated to the game at all. He's helped me a lot, especially with training sessions. There are players out there that are more dedicated, that want to get better, that strive to get better every day, I'm not that guy."

'Not dedicated enough'
Asked if he wanted to be more dedicated, Kyrgios said: "Probably not. In Cincinnati, I was not doing anything different. I was probably less dedicated than I was this week. And this week I was dedicated, and my shoulder starts hurting."

As for what he does next, a dejected Kyrgios said: "I don't know. I keep letting people down."

Shapovalov beats Tsonga
Canadian Denis Shapovalov stunned French eighth seed Jo-Wilfried Tsonga 6-4, 6-4, 7-6 (7/3) to became the youngest man in 10 years to reach the US Open third round.

Zverev ousted
Earlier, Germany's fourth-seeded Alexander Zverev was knocked out in the second round after falling to Croatia's Borna Coric 3-6, 7-5, 7-6 (7/1), 7-6 (7/4).