British Open

Leading: Shane Lowry had a 63 and set the British Open record for 54 holes at 16-under 197.

Closest pursuer: Tommy Fleetwood (66) was four shots behind.

Still on the radar: Brooks Koepka had a 67 and was seven behind.

Notable: This is the second time Lowry has had the 54-hole lead in a major. He was four ahead in the 2016 U.S. Open at Oakmont, shot 76 and finished three shots behind Dustin Johnson.

TV: 3 a.m.-11 a.m. !38 Note: With inclement weather forecasted, start times have been moved up. Key pairings: Shane Lowry and Tommy Fleetwood, 5:47 a.m.; J.B. Holmes and Brooks Koepka, 5:37 a.m.