A few things have built my confidence up. I moved to Tampa and started training with John Isner]. The climate there, the structure there has really helped me in a lot of ways," [Sock told *SI.com*.

Above all else, John Isner seems to have a realistic vision ... including the fine tuning of his game, training purposefully and making certain he is listening to his body and proceeding accordingly.

Former American tennis player John Isner shares his well-wishes for Novak Djokovic in the 2025 season. The big-serving American believes the Serb has what it takes to win big titles again this year.

Former American players John Isner and Sam Querrey believe that Germany’s Alexander Zverev’s best chance of winning a Grand Slam is at the French Open. The 27-year-old is regarded as one of ...

To my complete shock, I see that a match at Wimbledon is in the fifth set, tied at 48. John Isner and Nicolas Mahut. Playing in a set that started this morning. As has happened only once ...

Sam Querrey and John Isner felt the Serb would conquer the unprecedented ... I'm sure he had a great training block in the Maldives with everyone else. So, he's going to come out hot in January ...

American ex-pro Steve Johnson recently gave his take on Carlos Alcaraz's concern. According to the 37-year-old, the Spaniard has been worn down by injuries and is now cautious, aiming to avoid ...