California, Jan. 31 -- Rory McIlroy and Shane Lowry both had a hole-in-one in the opening round of the Pebble Beach Pro-Am.

Starting on the back nine at the Spyglass Hill course, world number three McIlroy struck the second ace on his PGA Tour career at the par-three 15th.

Later on, Thursday, Ireland's Shane Lowry emulated McIlroy when he hit a hole-in-one at the famous seventh at Pebble Beach, according to a BBC report.

The opening two rounds of the Pro-Am are split across the Pebble Beach and Spyglass Hill courses.

McIlroy and Lowry finished tied for eighth on six-under-par 66 after their opening rounds, two off the lead held by Russell Henley, with the obvious highlights of Thursday's play being their respective aces.

Northern Irela...