Fourteen-times major winner cards an 11-over-par 82 in second round of the Phoenix Open in US state of Arizona.
An unrelenting Rory McIlroy secured his second Dubai Desert Classic title in six years with a two-under 70 in the final round to win by three shots.
The Northern Irishman’s 22-under 266 total matched the lowest in the history of the tournament, set by Stephen Gallacher in 2013 and Thomas Bjorn in 2001.
The top-ranked McIlroy, whose win here in 2009 was his first as a professional, made just three birdies on Sunday but kept the mistakes off his card.
Sweden’s Alexander Noren, making a comeback this season from a wrist injury, had eight birdies in his round of 65 to take second place at 19-under.
Gallacher closed with a 69 to give the Scot third place with 16-under 272.
The $2.5m tournament forms the closing leg of the three-stop Desert Swing of the European Tour.
266 – Rory McIlroy
269 – Alexander Noren
272 – Stephen Gallacher