Ryan Fox has shot his worst round on the PGA Tour this year to start the Memorial Tournament in Ohio, putting him in danger of missing his second cut of the season.

The world number 41 carded a five-over 77 which included a double bogey, five bogeys and two birdies. Fox dropped three shots through the opening five holes but looked to get his round back on track with consecutive birdies at the par three eighth and the par four ninth to be one-over through the front nine.

However, another bogey to start the back nine and a further dropped shot at the par four 14th following a wayward drive. He then had a double bogey at the 17th after finding trouble at the greenside bunker.

The five-over round put Fox in a share of 95th place, 10 shots back from leader Davis Riley os the US.

Fox has had strong showings in recent weeks on the PGA Tour with top 25 finishes at the PGA Championship at the Charles Schwab Challenge. He’s expected to return home after this week’s tournament to spend time with his family, including newborn daughter Margot, before the US Open in a fortnight in Los Angeles.

Elsewhere, fellow Kiwi Daniel Hillier also had an off day with a seven-over 80 in the opening round of the Porsche Open in Hamburg.

Lydia Ko has started strong at the LPGA Tour’s Americas Open in New Jersey. Ko fired an opening round 69 to sit at three-under in a share of six place - four shots off the lead. Her round included an eagle on the par four third.