Genesis Invitational: Rory McIlroy makes promising start at PGA Tour event
McIlroy replaced Brooks Koepka as number one earlier this week
World number one Rory McIlroy is four shots ahead after a three-under-par opening round during the Genesis Invitational in California.
The 30-year-old Northern Irishman, who is on the world ranking for the first time in five years, shot a 68 with two eagles.
The American Matt Kuchar is in charge at the clubhouse after shooting a seven-under 64.
Tiger Woods, bidding for an 83rd victory of the PGA Tour, was four in the bottom half of his round.
The PGA Tour event at Pacific Palisades in Los Angeles sees nine of & # 39; the world's top 10 participating players.
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