![Jack Sock on Twitter: "@JohnIsner just trying to get in the body issue like you πͺ π" / Twitter Jack Sock on Twitter: "@JohnIsner just trying to get in the body issue like you πͺ π" / Twitter](https://pbs.twimg.com/media/BxbP-IRCMAA4urr.jpg)
Jack Sock on Twitter: "@JohnIsner just trying to get in the body issue like you πͺ π" / Twitter
![Historical perspective of the key aspects making Jack Sock's forehand to one of the tour's best, but also rather vulnerable Historical perspective of the key aspects making Jack Sock's forehand to one of the tour's best, but also rather vulnerable](http://cpta-tennis.org/wp-content/uploads/2017/03/DSC_0395.jpg)
Historical perspective of the key aspects making Jack Sock's forehand to one of the tour's best, but also rather vulnerable
![Tennis Inside Out on Twitter: "A little shirtless Jack Sock for you... http://t.co/TtAhVmCB1O" / Twitter Tennis Inside Out on Twitter: "A little shirtless Jack Sock for you... http://t.co/TtAhVmCB1O" / Twitter](https://pbs.twimg.com/media/BvGXkA0CIAA6VUS.jpg)
Tennis Inside Out on Twitter: "A little shirtless Jack Sock for you... http://t.co/TtAhVmCB1O" / Twitter
![American Jack Sock the latest victim of the heat at U.S. Open, retires in 4th set - New York Daily News American Jack Sock the latest victim of the heat at U.S. Open, retires in 4th set - New York Daily News](https://www.nydailynews.com/resizer/MKL0cajoI1PchmmwW-uV2Nuecys=/800x987/top/arc-anglerfish-arc2-prod-tronc.s3.amazonaws.com/public/W2E6THDB4O3BBHDOGTHSQTBRIM.jpg)
American Jack Sock the latest victim of the heat at U.S. Open, retires in 4th set - New York Daily News
![Jack Sock on Twitter: "Good practice this morning with @TommyHaas13 here in LA http://t.co/wjtmiA1B" / Twitter Jack Sock on Twitter: "Good practice this morning with @TommyHaas13 here in LA http://t.co/wjtmiA1B" / Twitter](https://pbs.twimg.com/media/A3Q0YogCEAA9tji.jpg)