Just happened to be watching Feherty's interview with Double D. His win in 1999 on same day as his father's win on the senior PGA tour was of interest to me in that I noted he was using the old Titleist 975 or 976 driver with the "cat in the hat" head cover. I was working for Titleist at that time, when Duvall, DL III and another player whose name I can not recall at the moment, were the names on Scotty Cameron's Putters. David has dropped significantly since then. Feherty said from number 1 in the world to number 1500. He took the title from Tiger. David admittedly said that he was "proud" of that accomplishment.
Another thing that interested me was the fact that the 975/976 titanium drivers more or less replaced the Howitzer which in my opinion was one of the ugliest drivers Titleist ever produced. All of these drivers may be found at thrift shops and veterans stores for under $5.00 every once in awhile.