(CNN) -- Briton Stuart Manley carded a seven-under par 65 to lead by one shot after the opening round of the Portugal Masters on Thursday.
Manley leads by one shot after carding a seven-under-par 65 in the Portugal Masters.
Manley edged ahead of India's Jyoti Randhawa, Spain's Alvaro Quiros and fellow-Briton Mark Foster, who share second after six-under-par 66s at the Oceanico Victoria Golf Course.
Manley, starting at the 10th hole, posted birdies at the 12th, 14th and 17th before a bogey at the 18th.
But back-to-back birdies at the second and third set up an incredible back nine, where Manley also gained shots at the second, eighth and ninth.
"I hit lots of fairways and made a few birdies. The greens were a bit bumpy and it was not the best of draws but for some reason the putts just went in, so quite happy," said Manley who came into the event at 174th on The Order of Merit.
Seven players are tied for third place, just two shots off the pace, with Martin Erlandsson, Andrew McLardy, Soren Kjeldsen, Graeme McDowell, Jean-Francois Lucquin, who had a hole in one at the par three eighth, and Sam Walker and Ross Fisher all breathing down the leaders' necks.
Randhawa carded birdies on the second, fourth and ninth holes before picking up another after the turn on the par four tenth. Two more followed at the par five 12th and at the 14th.
"I enjoyed playing in the sun. It reminds me of back home, nice and sunny. I like the heat and the sun on the course," said Randhawa after his bogey-free round.
In the race for The Order of Merit, Robert Karlsson finished three-under-par with Lee Westwood level after finding the water en route to a double bogey seven at the par five 17th hole.