The Offaly man is the joint leader.
Shane Lowry jointly holds the lead on day one of the Abu Dhabi HSBC Championship in the United Arab Emirates.
The Offaly man carded an eight under par round of 64, with Richard Sterne, Kobori Kazuma and Tommy Fleetwood matching the score.
Rory McIlroy is four-under through 13, with Tom McKibbin level par after five.
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Shane Lowry In Action At Abu Dhabi Championship.
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Portlaoise Panthers Keep Up Unbeaten Start In Division One
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Birr Suffer Semi-Final Defeat In Leinster Camogie Championship
Portlaoise Panthers Suffer Defeat In Women's Super League
Portarlington Seal Quarter Final Spot In Leinster Championship
Buccaneers Searching For Back To Back AIL Wins
Leinster Final Place On The Line For Birr
Portarlington Begin Leinster Journey Away To Carlow Champions
Provincial Final The Goal For Milltown
Portlaoise Panthers Face Tough Test Away In Limerick