Competing at the NCGA Valley Amateur, Perchak posted a record first-round score of 12-under 61 at par-73 Dragonfly GC in Madera.
The course was playing at 6,867 yards. The previous all-time low for 18 holes for an NCGA championship was a 10-under 62 shot by Trevor Clayton at the 2014 NCGA Valley Amateur at the Reserve at Spanos Park in Stockton.
"Holy moley!," Perchak said. "I'm a little speechless after this. I am so truly honored to have set the record. There have been so many great players that have competed in NCGA events."
A 33-year-old property manager from Alamo, Perchak opened his round with a blistering, seven-birdie 7-under 29 on his front-nine. After making the turn, he'd card a 32 after adding three more birdies and an eagle on the par-5 13th.
There, Perchak just missed out on going deeper with an albatross. His second shot, a 5-iron from 202 yards out, landed just 6 inches from the flagstick.
"The guys in my group thought it had gone in," Perchack said.
He'd hit all 18 greens in regulation, and not once faced a putt longer than 25 feet.
"I've been working so hard on my game. I just tried to stay one shot at a time," Perchack said. "After the front-nine 29, I told myself I was starting from scratch. Just using some little psychological tricks."