Brit Dan Evans produced the stand out result on day one at the US Open with a 6-4 6-4 6-2 victory over 11th seed Kei Nishkori.
Ranked 179th in the world, the Brummie's biggest career highlights have come in Group I of the Europe/Africa Zone in Davis Cup, where he has helped Britain beat Slovakia and Russia over the last two seasons.
And three days after qualifying at a slam for the first time, Evans, 23, posted his first ever main draw win, and with it guaranteed himself prize money of around £34,000 - a quarter of everything he has won in his career so far.
He said: "I knew I was a good player, but I just hadn't put it all together. I was pretty calm. It wasn't that much of a big deal what was happening on the court. I wasn't nervous.
"I played another good match. I've played some good matches for the last five weeks. I really want to go far in the tournament, win a few more matches. I'm ready to play again."
Evans' victory meant he has become the the fourth Briton to beat a top-15 player at a Grand Slam in the last 20 years, after Andy Murray, Tim Henman or Greg Rusedski.
In the second round he will take on Australia's abrasive Bernard Tomic.