The somewhat easier scoring conditions so far in the 73rd Masters Tournament -- because of an easier setup, and warm and dry weather -- have a group of golfers in position to end a 6-year-old scoring streak.

Tiger Woods reacts to sinking a birdie putt on No. 6 during the second round of the Masters. Woods had only one other birdie, at 15, and two bogeys in posting an even-par 72. (Jackie Ricciardi/Staff)

It's been that long since anyone broke par of 72 in all four rounds at Augusta National Golf Club.

Never mind shooting in the 60s in every round; no one has ever done that in the previous 72 Masters.

The last time someone shot four under-par rounds was 2002, by winner Tiger Woods (70-69-66-71) and Jose Maria Olazabal (70-69-71-71), who finished fourth.

Through two rounds this year, nine players have broken par each day, headed by co-leaders Chad Campbell (65-70) and Kenny Perry (68-67).

The others are Angel Cabrera (68-68), Todd Hamilton (68-70), Tim Clark (68-71), Nick Watney (70-71), Henrik Stenson (71-70), Vijay Singh (71-70) and Geoff Ogilvy (71-70).

Eight players had shot under par each day through two rounds in 2008. After three rounds, it was down to three. None of them -- Trevor Immelman with a final round 75, Brandt Snedeker (77) and Paul Casey (79) -- came close to breaking par that Sunday.

This could be the year for the streak to end, said one of the co-leaders.

"I do think it will happen, but it's going to be based on the weather," Perry said.

"In the South, springs are volatile here," continued Perry, who lives in Kentucky. "We got high winds and rain. There's a lot of dry humidity that sucks the moisture out of the greens and make them really fast."

There is no rain in the forecast for today or Sunday. The highs will be in the low to mid-70s.

Still, it won't be easy.

"This course, you can get one bad shot and you can get in so much trouble and you can compound it by trying to do something and end up in places that you have no chance," Campbell said.

Said Clark: "It's going to be tough to shoot under par for four days now, with it being as long as it is. It all depends on how firm that greens play and the weather."

Justin Rose said you can't panic when you have a bad hole at Augusta National.

"Once you miss a couple of shots, you realize what the course can do to you and you become defensive," he said. "That's when it eats you up. You need to play aggressively defensive, play aggressive to your spots, which are away from the flags."

Reach David Westin at (706) 823-3224 or david.westin@augustachronicle.com.