Justin Rose suffered the kind of day all golfers fear as the Australian Peter Lonard shot into the lead with a 10-under-par 62 at the Rio de Janeiro 500 Years Open yesterday.
In Brazil's first-ever European Tour event, Rose lies 19 shots off the pace in equal last place after carding a disastrous nine-over 81.
The English youngster started badly and never improved in his morning round, which included three double bogeys and five more dropped shots.
Starting on the easier back nine, Rose parred the opening three holes but could make only four at the 138-yard 13th and fared even worse on the 14th, making a double-bogey six to stand on three over after six.
He reached the turn on the same mark before hitting two further double bogeys and dropping three more shots on his second nine.
Lonard's opening four straight pars were followed by two eagles and six birdies in a faultless performance that was comfortably his most impressive round on tour.
Scotland's Alastair Forsyth was another to have an excellent day. He carded a seven-under 65, as did Switzerland's Paolo Quirici and England's Philip Golding.