Rory McIlroy is worried his course record of 61 at Royal Portrush might be in serious danger at this week's Irish Open. Related Stories The Open just a short putt away McDowell staying grounded Irish Open: Dad would have been so proud, says Daly's son Irish Open: Darren Clarke and Graeme McDowell walking tall Irish Open: Hoey would just love a showdown with McDowell for old times' sake