Earliest golf memory is hitting balls in his front yard with his dad. Was five years old when he hit one onto the roof of their one-story house, and he eventually hit a ball over it and into the backyard. Mostly a self-taught player, he estimates he had fewer than 10 lessons by his junior year of high school.

First set of clubs as a kid was a set of plastic Snoopy irons. Eventually, his grandpa, Bill Acquistapace, cut a Sam Snead 7-iron blade and persimmon head 5-wood in half and used duct tape and electrical tape for grips to provide him some "real" clubs.

Grew up playing at Haggin Oaks Golf Complex in Sacramento, California.

Originally committed to the University of California-Davis his junior year of high school before garnering more attention and eventually signing with Southern Methodist University. Austin's profile rose after he beat defending champion Bryson DeChambeau by one stroke (with a birdie on the final hole) at the 2011 California State Junior Amateur. Josh Gregory, the SMU men's golf head coach at the time, was following the group.

Has a Mini Australian Shepherd, Cypress, named after Cypress Point Club and a cat, Pebbles, named after Pebble Beach.

Enjoys Bruce Lee movies, as well as his journey through martial arts.