Gasnier is 6-under par through 15 holes of his first round.
There was a two-hour, 20-minute weather delay on Thursday. The first round will resume at 7:30 a.m. (ET) Friday morning with 27 players needing to complete their round. The second round will begin as scheduled.
Bill Lunde, Steve Larick, Bubba Dickerson, Brian Kortan, Brandt Snedeker and Scott Weatherly are knotted in third place after opening rounds of 5-under-par 67.
Springer, a two-time winner on the PGA Tour in 1994, began on the back nine and wasted little time in breaking into red figures. He birdied his first two holes, including a 30-footer at the 11th, but dropped a shot at the 12th.
The 39-year-old from San Francisco reclaimed the lost stroke with a birdie at 13. He added another birdie at the 15th, but ran into serious trouble at the par-4 18th.
Springer pushed his 3-wood drive right, then hit his second right again, this time finding water. His fourth stopped 20 feet from the hole and he two-putted for a double bogey.
Springer parred his first two holes after the turn, but birdied the third to reach 2-under par for the championship. He birdied his final four holes to get to minus-6.
'I played solid, but I could've driven it a little better,' admitted Springer, who failed in his attempt to qualify for the British Open earlier this week. 'I've been waiting for my game to heat up. It's been okay, but it's been a little stale. Even today, I had a couple of bumps out there.'
Gasnier tallied three birdies in a four-hole span from the third hole. He closed his front nine with a birdie at the ninth to make the turn at 4-under 32.
He recorded back-to-back birdies from the 12th to join Springer in the lead.
Jeff Klauk, Jeremy Anderson, David Branshaw, Jamie Broce, Jason Gore, Mike Heinen, Gary Hallberg and Rick Fehr are tied for ninth place at 4-under-par 68.