Graeme McDowell shot an impressive five-under 66 to move inside the top ten following the opening round of they Mayakoba Golf Classic in Mexico.

The 2010 US Open winner shot six birdies with just one bogey in the rain-delayed event on the PGA Tour.

Winner of the event during the 2015-16 season, McDowell goes into the second round four shots off current leader Danny Lee, who posted a nine-under 62.

FULL LEADERBOARD

New Zealand's Danny Lee leads by one stroke after firing a nine-under par 62 in the opening round.

South Korean-born Lee was out in 29 at the El Camaleon course, helped by an eagle on the fifth, and was 10-under after 13.

At that stage Lee had thoughts of shooting a sub-60 round, only to three putt from 15 feet on the 14th for his only bogey, before finishing with four pars.

"Definitely, it was in my head, 59 or 58," said Lee on pgatour.com.

"I have never shot that score out on the PGA Tour before, so I really wanted to make that happen.

"On 14, I had a less than 15-footer for birdie. Just one of those days I felt like I can make anything. I just gave it a little too much extra and hit it through the break and missed the next one coming back.

"I was a little bit bummed out on that one. But still, nine under is a great start."

American duo Adam Long and Brendon Todd are tied for second on eight-under.

Todd, who won the Bermuda Championship two weeks ago, missed a five-foot birdie putt at the 18th that would have tied him for the lead.