On the second day of the KLM Open in Holland earlier this month, Hanson called home to his wife Sanna in Florida to hear the news that their one-year-old son Tim had been taken to hospital with a respiratory virus.
The 34-year-old was on the verge of withdrawing from the tournament until his wife convinced him there was nothing he could do, and two days later he rolled in an eagle putt on the 72nd hole to claim his first victory for two years.
"It was a very strange week," Hanson said today in a press conference at Medinah before taking to the course in practice. "Sometimes this game is just a strange game.
"When you think about other stuff in between shots....I was thinking about him all the way around, especially Saturday. And all of a sudden, golf doesn't become that important anymore. So that might be one of the reasons why I won that tournament."
As for his son, Hanson added: "He's doing a lot better. They got out of hospital the Monday I got back home, which was nice. He's of course lost quite a bit of weight. He's turning two now in a couple of months, so getting stronger and getting back where he was before."
Hanson was a member of the victorious team at Celtic Manor two years ago, when he collected one point from three matches after teaming up with Miguel Angel Jimenez for a fourball win over Bubba Watson and Jeff Overton.
And after experiencing home advantage in Wales, he is bracing himself for being on the receiving end in Chicago - partly thanks to watching footage of previous contests.
"Playing at home last time was just amazing with the crowd behind you, so I think that's going to be one of the critical tests for our side," Hanson added.
"We discussed this quite a bit within the team room and we have got some boys in the team that played quite a few Ryder Cups over here, and we are trying to get as much information as possible of what to expect and how to handle the different situation playing over here.
"I've watched quite a few of the videos. Golf Channel have been very nice to show me all these over the last couple of weeks! It gets you revved up and gets you in a state of mind where you want to be coming into these matches."