It leaves him six shots off the lead.
Shane Lowry added another feather to his cap this morning as he became an Olympian.
He took to the course in Japan in the early hours of this morning alongside Tommy Fleetwood and Patrick Reed.
It was a superb start with a birdie on the par four 2nd hole and the former Open Champion continued steadily with nine straight pars.
A bogey on the 456 yard, 12th hole will be disappointing but once again the Clara man's mental strength came to the fore as he made a second birdie of the round on the par three 16th.
#Golf
— Team Ireland (@TeamIreland) July 29, 2021
An opening round of 1-under for @ShaneLowryGolf and he's currently T31☘️#TeamIreland #Tokyo2020 @GolfIreland_ pic.twitter.com/F6dnOHHfay
There was a delay in the middle of the round due to stormy weather and the potential of lightening at the Kasumigaseki Country Club which may have helped Lowry regain his composure for a final push.
McIlroy has signed for a two-under-par round of 69 and will also have work to do on day two.
Austria's Sepp Straka has a one-shot lead at eight-under.
He is back on the course tomorrow morning after 4am Irish time.
Full Interview: Portarlington Footballer Ronan Coffey
Full Interview: The Down's Manager Dermot Power
St Brigid's And St Joseph's Aiming To Reach Leinster Semi-Finals
Ballinagar And Milltown To Meet In Leinster Intermediate Quarter-Final
Ronan Coffey Praises Portarlington’s Young Guns Ahead Of Leinster Quarter-Final
Mauricio Pochettino Set To Be Appointed Manchester United Manager
Darragh Murray Named In Irish Squad For Fiji Clash
Portlaoise Panthers Aiming To Bounce Back In Division One
Portarlington On The Road In Leinster
The Down's Building Towards Leinster Football Quarter-Final
Laois Provisional League Fixtures Revealed
The Harps Manager Praises His Sides Efforts In Leinster
Buccaneers Claim Back To Back AIL Wins
Kilcormac Killoughey Captain Full Of Praise For Goalkeeper
Lough Lene Gaels Suffer Late Heartbreak In Leinster Quarter-Final
Crookedwood Win Leinster Junior Camogie Title
Conor Slevin Wins Dramatic Leinster Quarter-Final For Kilcormac Killoughey
Ireland Secure Comfortable Win Over Argentina
Kilcormac Killoughey Seal Win But Heartbreak For Lough Lene Gaels And The Harps