The Tournament starts on the PGA Tour in Ohio later.
Rory McIlroy, Shane Lowry and Padraig Harrington are all in the field for the Memorial Tournament, which starts on the PGA Tour in Ohio later.
McIlroy tees off in the company of Adam Scott and Viktor Hovland at 6.44pm Irish time.
Harrington is in a group alongside Doug Ghim and Adam Hadwin that begins its challenge at 2.08.
Lowry is the first Irishman out in a three ball with Nick Taylor and Billy Horschel from 1.44 this afternoon.
Meanwhile, Stephanie Meadow is in the line up for the Women's US Open, which starts at Olympic Club in San Francisco today.