Rory Mcilroy delighted to be back on top of golf’s world rankings.

Northern Ireland’s Rory Mcilroy has returned to the top of the world rankings for the first time since September 2015.

Mcilroy and Brooks Koepka did not contest last week’s AT&T Pebble Beach Pro Am, but Mcilroy has moved above the American due to the vagaries of the two-year rolling ranking system.

However, both are in action at this week’s Genesis Invitational, where Webb Simpson will be the only member of the world’s top 10 not competing in a star-studded field at Riviera.

This will be Mcilroy’s 96th week in total as world No 1.

AP. No 1: Rory Mcilroy.