Golf fans only have to register on-line to get free tickets to see Padraig Harrington, Rory McIlroy and Graeme McDowell on the opening day of the 3 Irish Open.

Anyone who registers at www.3irishopen.ie before Sunday, May 10 will receive a complimentary invitation for "3Thursday".

Normal gate prices apply for anyone who has not pre-registered before May 10th.