Graeme McDowell had a horror day on the par-threes at PGA National as he started the Honda Classic with a round to forget in Palm Beach Gardens in Florida.
The Rathmore man recorded a quadruple-bogey, a double-bogey and two bogeys to finish a combined seven-over-par on the four shortest holes on his way to a nine-over-par round overall that leaves him needing to do some work to make the weekend.
McDowell had started well, birdieing his opening hole, the 10th, and the 12th either side of a bogey at 11, but the quadruple-bogey came at the 15th and then the double followed on 17.
Although the World No.117 birdied the par-five 18th, that was to be his last of the day as he dropped four shots after the turn to end well off the pace and needing a big day to avoid a fifth missed cut in six events this year.
The lead is held by Australia's Matt Jones, who tied the course record at PGA National with a nine-under 61 to sit three shots clear of Aaron Wise and Russell Henley at the end of the early starters' rounds.
Ireland's Shane Lowry fared much better than McDowell, picking up four birdies and just one bogey on his way to a three-under 67 that has him six back of Jones.
On the European Tour, both Cormac Sharvin and Jonathan Caldwell will also need good rounds today to avoid the cut line at the Magical Kenya Open.
Sharvin opened with a one-under-par 70 at Karen Country Club in Nairobi that has him right on the cut line after the opening round, but Caldwell will need to pick up a few shots in today's second round after a one-over 72.
France's Benjamin Hebert leads by one after the first round after shooting a seven-under 64, with a six-strong group one shot back at six-under.
On the Symetra Tour, amateur Olivia Mehaffey finished with two birdies to sit four off Celine Herbin's early lead at the Carlisle Arizona Women's Classic after a three-under opening round.