WATCH: Johnson demolishes racquet in epic five-set win

NEW YORK — Steve Johnson did not have an easy day in the office on Tuesday. Facing Evgeny Donskoy, the American went down two sets to love, and didn't react well when he was broken to go down 1-4 in the second set.

Despite the massive hiccup, the world No. 22 went on to win, 4-6, 1-6, 7-6 (2), 6-3, 6-3, saving six match points along the way.

"I was ready to pack my bags and go home and I found a way to get out of that service game at 5-2…," Johnson said. "I knew once I got rolling, I knew, man, the crowd was going to help me."

Johnson was down 2-5 and 0-40 on his serve in the third set, so needless to say things were looking very bleak before he found a way to turn it around.

Of course, the epic battle took place on the new Grandstand, the site of John Isner's five-set marathon on Monday against Frances Tiafoe.

The 26-year-old Johnson has had easily one of the best summer's of his career, becoming the No. 1-ranked American just over a week ago for a hot second (Isner has since reclaimed his throne, by one ranking spot).

Earlier this month, Johnson reached the quarterfinals of Rio (where he beat Donskoy 6-1, 6-1 in the fourth round) and left with a bronze medal in doubles (with Jack Sock). Still, in tennis, it's always about the week you're in, and Johnson is more than a little relieved to get through to the second round.