Graeme McDowell, the last-minute replacement for Tiger Woods in Woods' own charity tournament, made the most of the opportunity today by shooting a six-under-par 66 to share the lead of the Chevron World Challenge with Y.E. Yang after three rounds. Both players finished with 54-hole totals of 206, or 10 under par, at Sherwood Country Club in Thousand Oaks. McDowell, 30, had sole possession of the lead until he made double bogey at the par-five 16th hole. ...A Northern Ireland native who was a golf star at the University of Alabama Birmingham, McDowell has yet to win on the PGA...