Despite heading into the tournament unseeded, Vescio was one of the tournament's dark horses given his impressive pedigree at junior level.

But after being on the sidelines for five years in pursuit of a life free of travel and training, Vescio decided to make the most of his god-given talents, with the MIA Open his first win since his return.

"I only started playing tennis again in the past five months because I gave up for five years. I walked away when I was 12 and I came back to it at the start of the year," Vescio said.

"I was playing it that much I grew a bit stale of it and I wanted to live life like a normal teenager.

"Since then I have been improving heaps and I was reasonably confident I would do well."

Vescio played in the Australian Money Tournament in Griffith in May and did not fare so well, but he will have happier memories from the local clay courts, after disposing of Arnold.

To get to the final, Vescio produced some classic play with Griffith's Tavis Bergamin (6-0, 6-1) and top-seed Nicholas Kyrgios (7-6, 6-2) proving no match for the right-hander.

But Vescio lost his rhythm in the first set of the decider after Arnold suffered cramp and blistering on his feet.

"It did throw me off early on because I couldn't get into the game and I couldn't get any rallies going to get my eye in," Vescio said of Arnold's injury.

"But once he started to play better and got his form I started playing well and I fed off that.

Arnold broke serve twice to claim an early 3-1 lead with the score moving to 4-3 to Arnold before he changed his shoes, allowing him to close out the first set.

But Vescio jumped out to a 3-0 lead early in the second as Arnold threw away cheap points with the eventual champion setting up points before looking to pull the trigger.