By fighting back from a set down to beat Spain's Adrian Menendez-Maceiras on one of Flushing Meadows' outside courts on Friday night, Evans earned himself a shot at 11th seed Kei Nishikori in round one.
It was his third win in as many days, more than doubling the tally of grand slam matches he has won in his whole career.
For the people who have tried to persuade Evans to fulfil his potential, with both carrot and stick, it must have been almost as satisfying as for the man himself.
But his career was in the balance only a few months ago as the Birmingham lad with a self-confessed love of hitting the town weighed up whether he could show the commitment to tennis he knew he needed to.
He was making very little money, and his dad had seen enough.
"Certain things were annoying me," said Evans. "We had some heated arguments about it all. He wasn't happy with what I was doing.
"Obviously it is a financial stress. Parents help you out a lot from an early age. There's times when you don't win matches and what I was doing was wasting money.
"He said, 'That's it. You've wasted all your money'. I was going out and stuff. I was down to not a lot left and he said he would help me if I would concentrate. I'm grateful for that.
"It is sort of for them. My dad's had a bit of a tough time as well. His mum and dad died so I was sort of taking the p***. I wasn't making it easy for him.
"It just shows if you're disciplined you can win some matches."
It looked like Evans had turned his career around last year when he led Britain to a surprise Davis Cup victory over Slovakia, but he slipped back into his old ways and dropped out of the top 400.
He lost his central funding from the Lawn Tennis Association at the end of 2012 and it was make-or-break time.
Evans moved down to London to live and train at the National Tennis Centre, but even as he helped Britain beat Russia with more Davis Cup heroics there was still a conflict in his head.
"I don't train hard enough and don't work hard enough day in and day out," he said then. "I want to push on. It's easier said than done."
But push on he has. Since arriving in North America six weeks ago Evans has followed a first-round loss in a Challenger tournament with back-to-back Challenger finals and now a place in the US Open first round, which should see him surpass the career-high ranking of 169th he set this month.
Explaining the transformation, Evans said: "It's definitely a change in me. I've changed a few things around in my personal life that needed to be done.
"It was a big weight off my shoulders coming here with no distractions and just getting on with it. That's helped a lot.
"What's satisfying is that I lost first round then trained really hard. I practised every day, trained hard every day and I've reaped the rewards from that. I've been disciplined, I haven't been out or anything.
"It was always in me, it was just putting it all together. I'm pretty proud of that. But it's not even that long, I need to carry on."
Going further in New York will be difficult, with Japan's Nishikori one of the toughest draws Evans could have got, but the 23-year-old now knows he can set his sights high.
He said: "I just want to play at this level instead of faffing around with Futures and Challengers.
"Luckily I'm out of Futures. If I win a few matches here I might be out of Challengers. It would be nice to do it all in one but there's still a lot of work to be done.
"I know I can do it at Davis Cup but now I've won 11 matches and lost two in finals with match points. That could have been 13 matches without losing.
"The consistency has been the best thing. I hadn't been consistent at all.
"I was throwing in the towel, wanting to go home, and that's what I probably would have done when I was younger. I've stuck it out. It should encourage me and all the younger ones coming through. I'm not exactly special."
Inevitably with Evans' results comes the feeling he is playing catch-up to what he might have already achieved.
Refreshingly honest, he does not shy away from the topic, but said: "I don't know if I was ready.
"I think that quite a bit, but I had to go through messing up. People have different routes. There's not a set way you have to become top 100. I've got a long time left."