Australia's Adam Scott (L) celebrates with caddie Steve Williams after he won the WGC Bridgestone Invitational PGA golf tournament at Firestone Country Club in Akron, Ohio, Sunday. — Reuters AKRON, Ohio – Adam Scott hit all the right shots Sunday in a round that was close to flawless and earned him his first World Golf Championship title. He celebrated with a caddie who has won quite a few more. Steve Williams, fired last month by Tiger Woods after a 12-year partnership, felt like a bigger winner when Scott rolled in one last birdie for a 5-under 65 and a four-shot victory in the Bridgestone Invitational. Williams, who had been on Woods' bag for 72 wins – including 13 majors and 16 world titles – called it “the best win of my life.” It was Scott who hit the shots, such as a chip-in for birdie on the 12th and a birdie putt just inside 30 feet on the 14th that enabled him to pull away from 19-year-old Ryo Ishikawa over the final hour at Firestone. Even so, Williams became part of the show this week, especially since Woods was playing for the first time in nearly three months. Williams took a jab at Woods in an interview off the 18th green by saying that of his 145 wins in his 33 years as a caddie, this WGC title with the affable Australian made it the “the greatest week of my caddying in my life.” That would include 13 majors, including an unprecedented four in a row through the 2001 Masters. Fans chanted Williams' name as he walked toward the 18th green, and Williams smiled back. One fan shouted out, “How do you like him now, Tiger?” By then, Woods was long gone. Ishikawa, at 19 bidding to become the youngest PGA Tour winner in 100 years, bogeyed the final hole for a 69 to finish tied fourth at 12-under with Australian Jason Day (69). British world number one Luke Donald and American Rickie Fowler each birdied the 18th for matching 66s to share second place at 13-under. Woods, a seven-times champion at Firestone with Williams on his bag, ended an erratic week with a level-par 70 to finish joint 37th, 18 shots off the pace after his first tournament start in three months. Piercy survives tense final to win Reno-Tahoe Scott Piercy survived a tense final round to capture the Reno-Tahoe Open by a single stroke Sunday and earn his first career victory. The 32-year-old needed to make a seven-foot par putt on the last for a round of two-under to remain a shot better than Pat Perez, who fired a 4-under 68 to put the heat on Piercy. Americans Steve Flesch and Blake Adams finished two shots behind at 13