Knapp shot a 59 earlier this year and nearly did it again Friday at Detroit Golf Club, making PGA Tour history. However, he's still three back of the 36-hole lead.

Going really low in golf is about mindset as much as anything, and Jake Knapp learned at an early age to not hold back when his clubs got hot. As a high school junior in Southern California, Knapp fired 58 on his home course at Costa Mesa Country Club,

Jake Knapp broke the Detroit Golf Club course record Friday in Round 2 with an 11-under-par 61, breaking mark of 62 set Thursday at Rocket Classic.