Paulina Gretzky Talks Motherhood, Dustin Johnson's Doral Win

"Dustin's the best dad, he's my best friend," Gretzky says.

— -- As Dustin Johnson won big Sunday night, the two most important people in his life were waiting for him.

Johnson's fiancee Paulina Gretzky and their newborn son Tatum were at the 18th green of the World Golf Championships-Cadillac Championships held at Trump National Doral, in Miami. Johnson was able to embrace his family after his victory.

"Now that's what I wanted to see," he said to them as he walked off the course.

It's been a year of ups and downs for the golfer, 30, who took a leave of absence from the game last year for personal reasons. But Sunday night was one of the biggest ups yet.

"It's just unbelievable. Dustin's the best dad, he's my best friend. He's been so supportive with me and we're just there for each other. I couldn't be happier for him," Gretzky said.

Johnson said seeing his family after the win at Doral was "the best part of the day for sure."

Johnson said fatherhood has definitely changed and crystallized his life for the better. The couple welcomed Tatum in January.

"It's hard to describe, but just from the first day he's born, your perspective on life completely changes. Things that were important aren't important anymore. He's kind of the only thing that's really important, and being there for him and being a role model for him," he told reporters after the tournament.

"It kind of makes life a lot easier I think, just because there's just one thing that's kind of all you think about," he said. "It definitely simplifies stuff."