Early on, Isner threaded a rare winning forehand pass while moving to his right; Nishikori should have known he was in trouble. After that, Isner’s timing on the forehand only got better. He pounded it on returns, from the middle of the court, from the service line, inside-out, inside-in. He ended the first set in fitting fashion, with a forehand that clipped the tape and dribbled smack onto the sideline for a winner.
“I played extremely well today,” said Isner, who ranked the performance “up there” among the best of his career. “From start to finish, I felt like I was aggressive. I hit all the right shots.”
This was the best I’d seen Isner play since he beat Roger Federer in the Americans’ 5-0 sweep of Switzerland in Davis Cup in 2012. As he did today, Isner worked himself into the zone in that match; and like today, even his weakest shot, his service return, was clicking for winners.
“When the ball was in play,” Isner said, “I just had to go for it, because he’s better than me from the baseline.”
Isner’s limitations often doom him; today he used them to his advantage. He knew the points had to be over quickly, so he didn’t waste time trying to out-rally Nishikori.
We have, of course, been here before with Isner. Despite his Davis Cup debacle and his No. 24 ranking (down from No. 10 at this event a year ago), his run of good form over the last three weeks shouldn’t surprise us. Miami is on U.S. soil, it’s on hard courts, and its matches are two-out-of-three sets. This is Isner’s bread and butter, his meal ticket, his home. Winning here, as we've seen, doesn’t mean his success will translate either (a) overseas, or (b) at Grand Slams. It doesn't even mean it will last until Wimbledon.
So for his detractors, it’s still possible to see the glass being half empty for Isner. What’s remarkable, though, is that it’s half-full again so soon after after Davis Cup. Isner has talked this week about how much he believes in his new coaching relationship with Justin Gimelstob. It sounds, from what Isner says, like opposites have connected.
“He sees the game so well, a lot better than I do,” Isner says. “He has a mind that works a lot different than mine, which can help me and is going to help me. He sees these things that maybe I don’t see...I’m just kind of more instinctual out there.”
Isner’s most important insight of 2015 was to go back to trusting his instincts on court, rather than any elaborate or strategic thought process. Those instincts aren’t going to steer him right every time, and he’s not always going to zone the way he did on Thursday against Nishikori. Isner will be 30 later this month, and the chances that he can break through to a higher plane of success now are slim. But his pendulum swing from the gloomy nadir of Davis Cup to the sunny heights of Miami in a scant seven weeks is one of those stories that makes tennis fun to follow from month to month.
Isner, for the moment, has made us wonder again just how long a guy that big can stay out of his own way.