It was in the book he did with Feinstein called You've Got to Be Kidding Me. Let's see, he was living with his back therapist in a hotel during the 2008 US Open while still married. Seems like a pretty broad hint to me. Subsequently he divorced his wife and married the back therapist.
Which brings up an interesting question, which is worse? Repeatedly betraying your wife on a purely physical level as Tiger did, or betraying your wife on both a physical and emotional level as Rocco did?
Neither of them have clean hands, but Tiger is excoriated and Rocco is Everyman. That is about as blatant a double standard as one could think of.
I'm sure the people out there who hate tiger because of his marital transgressions AND like Rocco IN SPITE of his (meaning they actually knew about it before now) are very, verrrrry few and far between.