Furyk said it helped that he had shot 59 three years ago at the BMW Championship.
"Having that experience in the past, and this one mimicked it a lot, it was comforting for me," he said in a Golf Digest story by Brian Wacker.
"You don't wake up on Sunday morning with an 8:41 tee time thinking that anything exciting is going to happen. I mean, really on those days the most exciting thing that can happen is the group in front of you plays quick and your flight takes off a little early and you get home is usually what you're looking to do. To get out there and make a bunch of birdies and get the juices flowing and feel like I was in the hunt in a golf tournament was kind of cool."
Furyk's peers were quick to acknowledge his feat. According to Wacker, Furyk had 85 messages as he exited the scoring trailer, his phone "buzzing in his pocket."
Was it the best round ever on the PGA Tour?
Many say no. Furyk's 58 came on a par-70 layout in pristine conditions. The debate continues on social media and elsewere.
But, until someone shoots 57, Furyk owns the lowest round. That's indisputable. So let's tip our cap to the longtime grinder with the odd swing, who now has a new moniker: Mr. 58.