Tournament host Rory McIlroy will need to curb the challenge of Masters champion Danny Willett if he's to capture a first Irish Open title after ending the second day at the K. Club one shot off the lead. McIlroy added a second round two under par 70 to his opening score of 67 to move within a shot of the leading duo of Willett and Scotland's Marc Warren, who signed for a 66. Willett has bounced back from missing the cut in last week's Players Championship adding a 71 to his opening score of 65 as the Englishman seeks to win for a third occasion this season.
