Jason Day may have mellowed as a new dad but he still can't guarantee he won't be a frustrating opponent in this week's World Golf Championships Match Play in Arizona.
The 25-year-old gained some headlines as a relative newcomer at the event in 2011 when he admitted playing mind games with English opponent Paul Casey in their second round battle.
Casey was the runner-up the previous two years but was rattled by Day's insistence on rarely conceding a putt.
When Day forced a tiddler putt on the 13th hole, Casey was clearly upset.
"It was only about a foot and a half. I knew he was going to hole it, but it's not about that hole. It's about future holes coming in. If I can make him a little angry, get him out of his game plan and force him to make silly decisions out there, that's part of the mind games you play," said Day at the time.
