Konta shook hands with her opponent, but bypassed Vieira Souza completely and stormed straight off the court, leaving Barty to fill the uncomfortable pause before the presentation ceremony by hitting a few balls into the crowd.
The Aussie had lost her last three singles finals, and almost saw Konta rally to create parity twice before closing out the match in two hours and five minutes.
One of Ash Barty's finest victories to date has been overshadowed by a dramatic display of poor sportsmanship from Brit Johanna Konta.
However the attention was captured by Konta, who seethed at a line call late in the final set, leaving Barty and other onlookers stunned by her antics. You are making decisions that affect our lives. "Do you fully understand that?" she said.
The win is Barty's second career WTA title, having triumphed previous year at the Malaysia Open in Kuala Lumpur.
"I think when I first got on the grass, I instantly felt comfortable".
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The start of that sequence was for bogey on the par-four 13th. "I would gladly take the two shots over continuing that display". It conjured up memories of John Daly hitting a moving ball that rolled off the green during the fourth round of the 1999 U.S.
Barty had lost her three previous singles finals but the top seed recorded a 6-3 3-6 6-4 victory on Sunday to add to her previous triumph at last year's Malaysia Open.
Barty shows off her silverware. "It's been building and building and getting better and better each match". Before she could return to court, rain fell on court for a time before the players returned to continue the match.
"She has defintely improved a lot since past year as well, is playing incredibly well and so it is going to be a tough match for me, and I am looking forward to that".
Konta, the world number 22, had breezed through the opening set in half-an-hour before, with Vekic having called for the trainer and looking ready to go for further treatment, the players were forced off by rain.
Barty, the world No.17, stayed tough to then rack up three match points on Konta's serve, the first of which she saved before the tough little Queenslander took the spoils with a passing shot.