Rory McIlroy is one shot off the pace after his opening round of the Genesis invitational.
The Masters champion shot a five under par round of 66 - England's Aaron Rai leads on six under with two holes of his first round still to play.
Shane Lowry is two over.
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On the LPGA Tour, Leona Maguire is five under after her second round at the Honda LPGA Thailand, twelve shots off the pace.
