"But I'm certainly glad I went because that's a place that I have so many good feelings from. I've won a lot of matches there," said Isner, a five-time champion at the event. "And I went into there, that tournament, really hadn't hit a ball since Wimbledon, and I actually managed to play pretty well.
"So I think winning a tournament, even though it's not quite as big of an event as Wimbledon, it does help things and helped me forget about that match a little bit more. So I haven't thought about it in quite some time, and I'm focused on, you know, this time of the year, which I really enjoy."
Still, he is being more selective about his schedule.
“I don't plan on playing the week before the US Open," said Isner. "Truth be told, I don't think I was in good enough shape to play last week in D.C. because I sort of labored through Atlanta as well, but I was still able to win the tournament.
“You want to be in peak physical shape and mental shape coming into these two events and then, of course, the US Open. So there's definitely something to be said about being rested. For me, I'm going full bore here in Toronto, and Cincinnati. I'm not playing doubles this year.
"I'm a little bit more tired than I would like to be, but I do have a bye here in singles, which does help. And when you get into a big event like this, you can maybe feel tired, but I'll have a lot of adrenaline.
"It's very important to be rested. I chose not to play the warm-up tournament for Wimbledon, and just stayed back home for 11, 12 more days, and I think that ended up being a good decision. Especially when you get older like I am, it's about not playing so many tournaments but being well-rested for the tournaments that you do play.”
He's among several older players at the top of the game—thirty somethings Roger Federer, Rafael Nadal and Novak Djokovic have won the three majors played so far this year—and says he is learning from Federer, who is older than him.
“Roger, I think he's the one that a lot of the players look up to. And to see him do so well, at 36, again he's so talented, and he's the greatest player we've ever had,” Isner said. “But to see him play so incredibly well, at 35 and 36, is, I think, a huge confidence booster for me.
"Also seeing how he's gone about it. He's given himself a lot of time to rest and recover. It's very important to be rested as you get older. You cannot just play tournament after tournament like maybe I did when I was 23, 24 years old. So it's very encouraging.
"Guys like Rafa. You have Kevin Anderson doing very well.
"And to me it makes sense that players are playing very well, in their 30s. If you take care of yourself, you should hold up physically. And as you gain years on the tour, you should become a lot more mature and a lot wiser."