Lowry is four shots off the lead.
Shane Lowry comes into day two at the St Jude Championship on one-under-par.
Meanwhile, Rory McIlroy comes into day two at the St Jude Championship in a battle to make the cut.
The Masters champion finished on four-over-par in Tennessee yesterday.
American trio Michael Thorbjornsen, Jordan Spieth and Kurt Kitayama lead on five-under.