Australia's Day was one of the first to congratulate Scott after he missed out on qualifying for the playoff -- eventually finishing two shots back on seven-under for the tournament.
"It was really tough," Day told reporters. "The pressure got to me a little bit."
While Scott celebrated, World No.1 Tiger Woods refused to blame his two shot penalty for taking an incorrect drop during his third round Saturday.
Woods finished with a final round of 70 to finish four shots off the lead -- but the U.S. star refrained from blaming Saturday's incident.
"We could do that 'what if?' in every tournament we lose," he told reporters.
"We lose more tournaments than we win out here on tour, so that's just part of the process and I'll go back to it.
"I thought 65 would win it outright today. I thought that was going to be the number and it looks like it was. If I would have shot my number, it might have been a different story.
"I had a tough time getting accustomed to the speed of the greens, they were so much slower than yesterday. I left every putt short on the first eight holes.
"I played well but unfortunately did not make enough putts and missed a few shots here and there. I had an opportunity today."
World No.2 Rory McIlroy carded a closing 69 to finish the week at two over par, but the Northern Irishman was satisfied with his game despite failing to challenge the leaders.
"I know I've played good enough golf here to win, it's just a matter of stringing it all together," McIlroy said.
"I was in a good position and did not quite have it all yesterday and that really cost me.
"You have to be right on your game for 72 holes here, I played a five hole stretch in five over and that was really it. I played nicely again today, if I just limit the mistakes from yesterday I am right there.
"It's frustrating. Sometimes you hit a good shot and all of a sudden it's off the green; it is what it is and you have to embrace it.
"It's Augusta and you're going to get some good bounces, you're going to get some bad. It will all even out in the end."
Earlier Sunday, China's 14-year-old sensation Guan Tianglang finished his momentous week with a three-over 75 to leave him 12-over for the tournament.
Guan, the youngest ever player to make the cut, received the Silver Cup after finishing as the leading amateur.
"It's not easy to play here and make the cut and be the low amateur and I think I did a pretty good job," Guan told reporters.
"I'm a little bit tired today. There are still a lot of things to improve. My short game is good, but I could still get better and my driving has to get a little bit longer. Yes, everything needs to improve."
Defending champion Bubba Watson endured a nightmare final round, dunking his ball into the water on three separate occasions at Rae's Creek.
Watson hit a seven-over 10 on the 12th -- Augusta's shortest hole at just 155-yards.
"If you're not going to win, you've got to get in the record books somehow," Watson told reporters after carding a final round 77, seven-over for the tournament.
"So I'm a guy that got a double digit score on a par three."