Canadian Dan Halldorson birdied three holes in a row in the early going, shot a 68 and maintained a one-stroke lead today at the halfway point of the $450,000 Sea Pines Heritage Classic.

"I have a good swing, good tempo. I'm hitting the ball the way I want to, and it feels natural," Halldorson said after completing two trips over the Harbour Town Golf Links in 134, 8 under par.

A single stroke off the pace in the chase for an $81,000 first-place prize was Don Pooley, the 1985 Vardon Trophy winner who birdied five of his first seven holes on the way to a 5-under-par 66.

Pooley, who needed only 22 putts, completed 36 holes in 135, 7 under par.

"I knew I was putting well, but I didn't know how well until I added up the putts," Pooley said.

Fuzzy Zoeller, a winner at Pebble Beach, Calif., earlier this season, shot another 68 on the tight, little course overlooking Calibogue Sound and was at 136, two off the lead.

Chip Beck had a 67 and was at 137. Greg Norman, the Australian who was runner-up in the Masters last week, was another shot back at 68-138.

Halldorson chipped to six inches for a birdie 4 on the second hole, birdied the next from five feet and made a 20-footer on the fourth. Ballesteros in Tie Associated Press

CANNES, France, April 18 -- Seve Ballesteros, rallying from a poor start, shot a 69 to tie John Bland -- who shot 71 -- at 5-under-par 139 after two rounds of the $150,000 Cannes Open tournament today.

First-round leader Magnus Persson slipped to 141 after a 2-over-par 74 on the 6,172-yard course. He was joined by Des Smyth, Dave Russell and Neil Hansen, whose 68 was the best round of the day