The world’s top-ranked golfer is a shot off the first-round lead on a day with sunlight, rain, breezes and strong gusts at Royal Portrush in Northern Ireland.

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PORTRUSH, Northern Ireland — Jacob Skov Olesen is a surprise co-leader of the 153rd British Open at Royal Portrush Golf Club. The 26-year-old Dane bogeyed 18 but signed for 4-under 67, a score matched by China's Haotong Li, England's Matt Fitzpatrick, South Africa's Christiaan Bezuidenhout and Harris English of the U.S.

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.

A brief look at the first round of the British Open at Royal Portrush (all times EDT): AT THE TOP: Matt Fitzpatrick, Harris English, Jacob Skov Olesen, Christiaan Bezuidenhout and Li Haotong were tied at 4-under 67.

Give Harris English and his caddie for this week in the Open Championship credit for making the most of a disheartening situation for the five-time PGA Tour winner. The troubles that Harris’ caddie of nine years,

McIlroy didn't play his best Thursday at Royal Portrush but shot 1-under 70 and is three shots off the 18-hole lead.