Stephen Ames defended his Boeing Classic title with a birdie on the par-5 18th hole, securing a one-stroke victory over Ernie Els, Steven Alker, and Robert Karlsson. Ames, a 60-year-old naturalized Canadian from Trinidad and Tobago, captured his third PGA Tour Champions title of the season and ninth overall. He finished at 11-under 205, highlighting his consistent performance this year. Els, who led the Charles Schwab Cup Standings, missed a crucial putt at the 17th hole, which cost him the title. Karlsson, who had led earlier rounds, struggled in the final round, shooting a 75. Local favorite Fred Couples finished tied for 18th at 4 under.