Lancaster, Ontario ? Jim Furyk and Justin Rose took advantage of perfect scoring conditions Thursday in the first round of the Canadian Open.

Furyk and Rose shot the lowest rounds ever in professional play on the 90-year-old Hamilton Golf and Country Club course, 7-under 63s that left them a stroke ahead of Brandt Jobe, Nathan Green and Frank Lickliter II on the rain-softened layout.

“I shot a low number, but I was obviously aided by the weather and the conditions,” said Furyk, two weeks away from his fifth straight U.S. Ryder Cup appearance.

With the ground still soggy from the remnants of Tropical Storm Ernesto, Furyk and the other morning starters began play in calm, cool conditions.

The temperature climbed into the low 70s in the afternoon, but there was no more than a gentle breeze on the rim of the Niagara Escarpment high above the city of Hamilton.

“We were fortunate that it was soft, but when the golf course gets firm and fast it tends to spread the field out a lot more,” Furyk said. “It rewards good shots and hinders bad shots.”

Furyk, second on the PGA Tour money list and No. 3 in the world rankings, holed a 9-iron shot from 120 yards for eagle on the 379-yard 12th hole – his third hole of the day – and added five birdies in his bogey-free round.

“Weren’t any mistakes out there,” Furyk said.

Rose, coming off a fourth-place tie Monday in the Deutsche Bank Championship, had six birdies and a bogey in a front-nine 30 and made two more birdies on the back nine, the last a 1-footer after a 30-yard chip on the par-5 17th. The 26-year-old Englishman capped his afternoon round with a 6-foot par putt on the 18th.

They broke the course pro record of 64 set by Tommy Armour in the fourth round of the 1930 Canadian Open, a tournament the Silver Scot won in a 36-hole playoff with Leo Diegel. Jesper Parnevik, Arron Oberholser, Jonathan Byrd, Bubba Watson and Sean O’Hair opened with 65s, and defending champion Mark Calcavecchia topped a group at 66.