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).

The Northern Irishman made six birdies and three bogeys on Friday to find himself in a six-way tie at seven under par at Philadelphia Cricket Club.

Keith Mitchell has maintained his lead. Shane Lowry had the round of the day. And defending champ Rory McIlroy is within striking distance.