Australia's Nick Kyrgios a mentally tougher opponent for Davis Cup tie against United States: Jack Sock
![José Morgado on Twitter: "Good friends Nick Kyrgios and Jack Sock from Team World practicing for the Laver Cup. [getty] https://t.co/tHxFobl2BW" / Twitter José Morgado on Twitter: "Good friends Nick Kyrgios and Jack Sock from Team World practicing for the Laver Cup. [getty] https://t.co/tHxFobl2BW" / Twitter](https://pbs.twimg.com/media/Dna5hg6X0AAqNcT.jpg)
José Morgado on Twitter: "Good friends Nick Kyrgios and Jack Sock from Team World practicing for the Laver Cup. [getty] https://t.co/tHxFobl2BW" / Twitter
![Rafa Nadal and Tomas Berdych lose to Nick Kyrgios and Jack Sock at Laver Cup (1) – Rafael Nadal Fans Rafa Nadal and Tomas Berdych lose to Nick Kyrgios and Jack Sock at Laver Cup (1) – Rafael Nadal Fans](https://rafaelnadalfans.com/wp-content/uploads/2017/09/rafa-nadal-and-tomas-berdych-lose-to-nick-kyrgios-and-jack-sock-at-laver-cup-1.jpg)
Rafa Nadal and Tomas Berdych lose to Nick Kyrgios and Jack Sock at Laver Cup (1) – Rafael Nadal Fans
![Nick Kyrgios demands respect for Jack Sock after narrow defeat to Rafael Nadal | Tennis | Sport | Express.co.uk Nick Kyrgios demands respect for Jack Sock after narrow defeat to Rafael Nadal | Tennis | Sport | Express.co.uk](https://cdn.images.express.co.uk/img/dynamic/72/590x/1472845_1.jpg?r=1628172617775)
Nick Kyrgios demands respect for Jack Sock after narrow defeat to Rafael Nadal | Tennis | Sport | Express.co.uk
![Nick Kyrgios makes Jack Sock 'pressure' confession ahead of Washington doubles showdown | Tennis | Sport | Express.co.uk Nick Kyrgios makes Jack Sock 'pressure' confession ahead of Washington doubles showdown | Tennis | Sport | Express.co.uk](https://cdn.images.express.co.uk/img/dynamic/72/1200x712/1646203_1.jpg)
Nick Kyrgios makes Jack Sock 'pressure' confession ahead of Washington doubles showdown | Tennis | Sport | Express.co.uk
EPIC Jack Sock & Nick Kyrgios Doubles Points From Madrid 2017! | Atlanta, Nick Kyrgios, Jack Sock, Real Madrid CF | This gonna be FUN 🤩 Jack Sock & Nick Kyrgios are
![Nick Kyrgios set to brush Thanasi Kokkinakis to play doubles with American Jack Sock at the US Open | Daily Mail Online Nick Kyrgios set to brush Thanasi Kokkinakis to play doubles with American Jack Sock at the US Open | Daily Mail Online](https://i.dailymail.co.uk/1s/2023/06/17/03/72236519-12205043-image-a-12_1686968944742.jpg)
Nick Kyrgios set to brush Thanasi Kokkinakis to play doubles with American Jack Sock at the US Open | Daily Mail Online
![Sock bracing for Kyrgios challenge | 5 April, 2017 | All News | News and Features | News and Events | Tennis Australia Sock bracing for Kyrgios challenge | 5 April, 2017 | All News | News and Features | News and Events | Tennis Australia](https://www.tennis.com.au/wp-content/uploads/2017/04/AE7Q7333-700x450.jpg)
Sock bracing for Kyrgios challenge | 5 April, 2017 | All News | News and Features | News and Events | Tennis Australia
![KEY BISCAYNE, FL - MARZO 21: Venus Williams, Simona Halep, Nick Kyrgios y Jack Sock en el octavo evento anual de tenis de caridad All-Star del Ritz-Carlton Key Biscayne, Miami, en el KEY BISCAYNE, FL - MARZO 21: Venus Williams, Simona Halep, Nick Kyrgios y Jack Sock en el octavo evento anual de tenis de caridad All-Star del Ritz-Carlton Key Biscayne, Miami, en el](https://c8.alamy.com/compes/kkym8m/key-biscayne-fl-marzo-21-venus-williams-simona-halep-nick-kyrgios-y-jack-sock-en-el-octavo-evento-anual-de-tenis-de-caridad-all-star-del-ritz-carlton-key-biscayne-miami-en-el-ritz-carlton-key-biscayne-el-21-de-marzo-de-2017-en-key-biscayne-florida-personas-jack-sock-nick-kyrgios-transmision-ref-flxx-kkym8m.jpg)
KEY BISCAYNE, FL - MARZO 21: Venus Williams, Simona Halep, Nick Kyrgios y Jack Sock en el octavo evento anual de tenis de caridad All-Star del Ritz-Carlton Key Biscayne, Miami, en el
![Nick Kyrgios Recalls Bet Against Friend Jack Sock on the Uncertainties of Tennis Tour - EssentiallySports Nick Kyrgios Recalls Bet Against Friend Jack Sock on the Uncertainties of Tennis Tour - EssentiallySports](https://image-cdn.essentiallysports.com/wp-content/uploads/GettyImages-851703654-640x853.jpg)