USA's Cory Whitsett, right, and Bobby Wyatt with Whitsett's caddie Sean Piotrowski on Saturday of the 2013 Walker Cup at National Golf Links of America in Southampton, N.Y.

USA's Cory Whitsett, right, and Bobby Wyatt with Whitsett's caddie Sean Piotrowski on Saturday of the 2013 Walker Cup at National Golf Links of America in Southampton, N.Y.