Both are playing at the CJ Cup on the PGA Tour.
Rory McIlroy and Shane Lowry have work to do at the CJ Cup on the PGA Tour.
Entering round two, McIlroy is 4 under and Lowry is 1 over.
American Robert Streb is out in front on 11 under par.
On the European Tour, Jonathan Caldwell has slipped back to 3 over par in the second round of the Andalucia Masters.
The lead is currently held on 4 under par by Sebastian Soderberg and Julien Guerrier.

Tuesday Morning Sports Update
Hurling New Dissent Rules To Be In Place For National League Finals
Rory McIlroy Confirms Return To Golf Irish Open
Six Nations Trophy To Be Replaced This Year
Irish Squad Back Training As Six Nations Resumes
Monday Morning Sports Update
Kildare LGFA 7 Points Win vs Meath
Kildare Lose Heavily to Meath