SECOND ROUND LEADERBOARD:
-8 N Green (Aus), T Pernice jnr (US) -7 B Gay (US), S Maruyama (Jpn)
-6 Z Johnson (US), W Simpson (US)
Selected others: -5 G Ogilvy (Aus) -3 L Donald (Eng), B Davis (Eng), KJ Choi (Kor) +1 E Els (SA)
Pernice fired the best round of the day, including five birdies and an eagle
England's Luke Donald slipped back to five shots behind joint leaders Nathan Green and Tom Pernice Jnr after round two of the Sony Open in Honolulu.
Donald began the day just two shots adrift of first-round leader Shigeki Maruyama, but fired a 70 which left him tied for 16th place.
Green, from Australia, was among the early starters as he fired a second consecutive four-under-par round of 66.
United States hopeful Pernice had the best round of the day, carding a 63.
"You're not going out thinking you're going to shoot seven-under. You just kind of plod your way around and try to hang in there," he said after collecting five birdies and an eagle.
"I made some nice saves when I needed to on the back nine, and obviously the eagle at the last was quite exciting."
Green added: "I don't think the conditions were as bad as we thought they were going to be.
"The wind didn't seem anywhere near as strong as they predicted."
Donald, who was sidelined for five months in 2008 by a wrist injury, is one of nine players on three under - including fellow Englishman Brian Davis and defending champion KJ Choi.
The only other Briton on show, Greg Owen, was a shot further back on two under.
Former American Ryder Cup player Davis Love III was among the players to miss the cut, narrowly missing out after finishing two over par - while Ernie Els, winner of three majors, made it by one stroke.