Dustin Johnson and Muirfield Village member Jason Day headline a stellar field in Dublin, Ohio. Here's what You Oughta Know heading into the Memorial.
• Defending champion: William McGirt (def. Jon Curran in playoff)
• Dustin Johnson has six PGA Tour wins since last June (twice as many as anyone else)
• The world No. 1 finished third in this event last year (best of career)
• Jason Day finished second in his previous start (lost playoff at Byron Nelson)
• Jon Rahm has eight top-5s on the PGA Tour since turning pro (tied for most in that span)
• He's recorded 4.