So I was playing yesterday and I noticed my drives were 10-15 yards shorter then they usually are. After and 14 holes I looked at the face and right in the sweet spot slightly above center there was a flat spot. I took it to my favorite golf shop and they did tests to see if I was right and I was. So I left it with them for them to take care of the warrenty process. I have never flatted a Titleist driver before Luckily they had a used 8.5 head for me to borrow for my match play event tomorrow.