I don't really know. I didn't actually watch the tournament yesterday, but I heard about his announcement of it this week on Golf Central last evening. They didn't say much more. According to his website, his son Ben is 4 years old, but who knows when that info was last updated.
Here's a link to the family info on his official site:
It's interesting to read some of the stuff they say about their son, knowing now about the autism.