Another bogey-free round belonged to 44-year-old Justin Rose, in the group at 69 that included 52-year-old Lee Westwood, former Open champion Brian Harman and Lucas Glover, who was tied for the lead until a pair of bogeys early on the back nine.

Rory McIlroy shot 1 under Thursday at Royal Portrush, a better start than the first time he played the British Open at the Northern Ireland course near home.

HOME HERO: Rory McIlroy of Northern Ireland made a late birdie for a 70 and was three shots behind. The last time he played the British Open at Royal Portrush, he made an 8 on the first hole, shot 79 and wound up missing the cut.

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