The good news for Mitchell is Lowry and Sepp Straka (-10) are the only players to reach double figures under par through the second round. The bad news is the group tied for fourth at 7 under features a who's who of the best players on Tour this season (aside from Scottie Scheffler, who isn't in the field).

Just weeks removed from a historic victory at Augusta National—securing his first career Masters title and completing the career Grand Slam—Rory McIlroy is back in action this weekend, aiming for a late rally on Sunday to claim the Truist Championship in Philadelphia.

Rory McIlroy finishes five shots behind leader Keith Mitchell after the first round of the Truist Championship in Philadelphia as he warms up for next week's US PGA Championship.