NORTH BERWICK, Scotland—Justin Thomas dressed in tartan-patterned trousers and played the part Thursday in the Scottish Open with an 8–under 62, his lowest opening round on the PGA Tour since his 59 in the Sony Open seven years ago.
Rory McIlroy was three shots behind with a 65 that he hopes will be a big step toward moving on from his U.S. Open collapse last month.
