Rocket Classic is in the second round at Detroit Golf Club. The 29th of 36 regular-season PGA Tour events, the tournament has a total purse of $9.6 million and a first-place prize of $1.728 million.

The performance vaulted Knapp 123 spots up the leaderboard and into a tie for seventh as afternoon play continued. Chris Kirk shot a second straight 65 in the morning to share the lead with Philip Knowles (66-64), who chipped in three times for eagle on his day.