The Bridgestone Invitational, the fourth and final World Golf Championship on the PGA Tour schedule, takes place this week at Firestone Country Club in Akron, OH. The field of 76 is one of the smallest of the season, featuring 55 of the top 56 players in the official world golf ranking. There's no shortage of story lines, including Jordan Spieth making first start since his Open Championship victory. Defending champion Dustin Johnson is in the field, coming off a strong performance at the RBC Canadian Open.