FARMINGDALE, N.Y. (AP)—Phil Mickelson lumbered along the rain-softened turf of Bethpage Black for 29 holes. Lucas Glover had it even worse, taking nine hours to play 31 holes Friday in a U.S. Open that felt like a marathon.

Their only regret was they couldn’t play more.

Sunshine made a cameo on Long Island, enough to dry the fairways and keep the greens as soft as a sponge. They played into the stillness of twilight, a perfect recipe for low scoring rarely seen in a major known as the toughest test in golf.

“It’s not going to get any easier than it is right now for us,” Mickelson said. “We wanted to play as many holes as we could.”

Darkness finally chased them from the course, but not from the top of the leaderboard.

Glover opened with a 69, had a quick lunch, then gobbled up the course for five birdies while stretching his streak to 19 holes without a bogey. He was at 6 under par through 13 holes when the second round was suspended, one shot ahead of Ricky Barnes.

Mike Weir of Canada birdied the last two holes of the first round for a 64, the lowest score in six years at the U.S. Open, and was among those at 4 under after making a pair of bogeys in his nine holes of the second round.

Mickelson had his usual dose of thrills and spills and was 1 under through 11 holes.

The top 11 players on the leaderboard all came from the second wave.