*Add Tiger Woods’ caddy to the long list of people upset with the superstar golfer.

In an interview with New Zealand commercial television network TV3, Steve Williams expressed anger and frustration at his boss over the string of adulterous affairs and said he would have exposed Tiger’s secret had he known.

“I’m a straight-up sort of person. If I had known something was going on, the whistle would have been blown,” said Williams, adding that he was angry after the revelations emerged, but his role was to be a friend to Woods.

“Of course I’m mad at him, why would you not be?” Williams said. “I’m close with his wife and he’s got two lovely children and he’s let them down. …When a guy’s having a tough time, it’s not up to me to beat him with a stick right now. He’s getting enough grilling from everybody else.

“Tiger’s one of my closest friends and he needs my support right now and I’d never think of walking away.”

The New Zealander said he had not spoken to Woods about his transgressions since it made world headlines in November.

“When I talk to him, I don’t talk to him about what’s happened. I talk to him about the future and about what we’re going to try to accomplish and how we’re going to get over it,” Williams said.