McIlroy leaning on caddie Diamond's playing experience at Royal Portrush

As remembered: Rory says Royal Portrush 'the same golf course'

PORTRUSH, Northern Ireland – For most, Harry Diamond is simply identified as Rory McIlroy’s caddie. Some might take it a bit deeper and point out the two were best friends growing up in Northern Ireland and that Diamond was the best man at McIlroy’s wedding.

But as McIlroy explained Wednesday at Royal Portrush, site of this week’s Open Championship, Diamond was an accomplished amateur whose experience could be particularly helpful this week.