2018 was the best year for John Isner, but even this season, at least until the end of July, it was positive. The physiological blackout arrived from August onwards. The American, who won the Miami Open in 2018, managed to defend the final, but not the victory this season, losing to Roger Federer.
However, since the beginning of the tennis year he has achieved several good results: semi-final at the New York Open, semifinal at the Delray Beach Open, semifinal at Acapulco, finals at the Miami Open and victory on the grass-courts of Newport.
It must be considered that he completely missed the clay-swing, appearing at Wimbledon with the semi-final to defend, losing in the second round against Mikhail Kukushkin, at the end of a great battle. From August onwards his best result was the quarter-finals at the China Open.
At 34, Isner has proven to be still competitive on fast surfaces, when he is at an excellent physical level. The first part of the season has certified his status. Too bad for the remaining six months, during which between small physical discomforts and performance below expectations he failed to play a complete regular season but, de facto, dividing it into two separate moments.
In the Slams he didn't get the good results of last year, but only disappointments and unexpected eliminations; in the three Majors he played his best result was the third round at the US Open. In 2020, despite his advancing age and a physique to be managed with extreme caution, he may still have the chance to improve his score of titles, stopped at 15 (in 28 finals played).
Thanks to his style of play Isner is not a player who wastes a lot of energy, so he can still preserve himself to play well for other years. Starting next in the new season when, in the first few months, he will have to defend many points.