Rory McIlroy seven shots off the pace as Dustin Johnson takes lead in Memorial tournament

The Holywood golfer, though, drew attention for his change to a conventional putting grip having won using the cross-handed method in Ireland.

Dustin Johnson holds a one-shot lead heading into the second round of the Memorial Tournament after posting an impressive 64 in Ohio.

The American started like he meant business with three straight birdies and closed his front nine with another three.