The American is through to his fourth career ATP Masters 1000 final.
But on Friday, the 32-year-old Isner took the racquet out of the World No. 6's hands with outlandish serving and free-swinging play from the baseline, intertwined with effective trips to the net with sweetly placed drop volleys.Del Potro was unable to earn a break point against Isner, or even get to deuce.
The American who ripped through Marin Cilic and Hyeon Chung, continued to pound forehand and pound serves, relegating del Potro to a virtual spectator watching winners fly by.
"I think more importantly than that, it was just a case of me playing some good tennis out there and being relaxed, which was crucial". Not only has Zverev faced more break points overall in their meetings, he's also faced more in two of their three matches, so it is likely that there was a large dose of variance and fine margins in Zverev's head-to-head triumphs.
Now riding a 15-match unbeaten run, Del Potro, ranked sixth in the world, seems to finally be playing at the level most expected of him after being dogged by injury problems previous years. "But today John played better. I'm happy it's all coming together right now".
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"We're satisfied Cricket Australia has dealt with this incident swiftly for the benefit of the game and its fans". "I'm sorry. Regardless of your opinion of him, you can't look at this image and say you don't feel slightly bad for Steve Smith .
"I tried to be more aggressive". "John deserved to win today".
"It's not my main goal, but if I can improve it's always better", Del Potro said, as per Express. "There's no other way to play the point, especially for me, because I can't really run from side to side".
"What I am doing seems to be normal, but it's not a little thing".
On Sunday, for the biggest title of his career, Isner will take on yet another 6-foot-6 foe in Alexander Zverev. Busta saved multiple break points in the first set to give himself the opportunity to move ahead, but Zverev came through with the set hanging in the balance.
Now on the Exchange, it's the German youngster who is the favourite to take the title - he's [1.66] at the time of writing - with Isner the underdog at [2.48].
Isner smacked consecutive aces to reach 6-all, and made all four first serves in the tiebreaker, including aces of 138 and 139 miles per hour. Despite that, the two have always been put on a display of high-quality tennis, with their match in Miami past year the most entertaining. "I made some winners; made some backhand winners finally in the match and found my rhythm".