Vilamoura - Australia's Richard Green capitalised on overnight leader Pablo Martin's misfortune to win the Portugal Masters here on Sunday.
Green, seven shots off the Spaniard after Saturday's third round, had an eventful final round with 11 birdies and four bogeys for a seven under par 65 for an 18 under par total of 270.
Martin had bogeys at the 15th and 16th but a birdie at the 17th left him only requiring a birdie at the final hole to force a play-off with Green, watching from the clubhouse.
But he fluffed his lines, driving into the water and finishing with a double bogey for a total of 15 under par 273 for a tie for sixth.
The round of the day belonged to Ryder Cup star Francesco Molinari with nine birdies and an eagle at the par-five third for a 10-under par round and a share of second on 16 under 272 with Swede Robert Karlsson, Spaniard Gonzalo Fernandez-Castano and Joost Luiten of Holland.
England's David Dixon and Ireland's Paul Lawrie shared sixth with Martin.
Scores (par 72; GBR & IRL unless stated):
270 - Richard Green (AUS) 70 66 69 65
272 - Robert Karlsson (SWE) 64 71 70 67, Francesco Molinari (ITA) 74 62 74 62, Joost Luiten (NED) 70 68 65 69, Gonzalo Fernandez-Castano (ESP) 69 67 68 68
273 - David Dixon 68 67 71 67, Pablo Martin (Spa) 67 68 63 75, Peter Lawrie 68 68 68 69
274 - Gary Boyd 68 68 69 69, Mikko Ilonen (FIN) 65 68 69 72, Charl Schwartzel (RSA) 67 71 66 70, Oliver Wilson 70 66 65 73, Ignacio Garrido (ESP) 71 68 66 69, Steven O'Hara 68 71 66 69, Thongchai Jaidee (THA) 70 66 68 70, Fredrik Andersson Hed (SWE) 71 66 70 67
275 - Robert Jan Derksen (NED) 68 69 70 68, John Parry 69 70 64 72, Thomas Bjorn (DEN) 71 68 66 70, Simon Dyson 70 70 69 66, Ross McGowan 72 68 68 67
276 - Soren Kjeldsen (DEN) 69 67 71 69, Jeppe Huldahl (DEN) 72 68 61 75, Gregory Bourdy (FRA) 72 67 67 70, Pablo Larrazabal (ESP) 68 69 70 69, Gregory Havret (FRA) 68 68 71 69
277 - Thomas Aiken (Rsa) 67 70 65 75, Hennie Otto (RSA) 69 67 69 72, Ross Fisher 68 70 67 72, Anders Hansen (DEN) 68 71 69 69, David Howell 67 68 71 71, Maarten Lafeber (NED) 64 67 72 74, Rhys Davies 69 67 69 72, Paul Lawrie 67 69 72 69, Richard Finch 70 65 69 73
278 - Jose-Filipe Lima (POR) 70 64 72 72, Alexander Noren (SWE) 65 73 68 72, Miguel Angel Jimenez (ESP) 70 69 68 71, Soren Hansen (DEN) 70 70 68 70, Mark Brown (NZL) 69 71 66 72
279 - Anthony Wall 67 72 71 69, Damien McGrane 67 72 68 72, Richie Ramsay 70 68 70 71, David Horsey 66 69 72 72, Phillip Price 71 69 70 69, Rafael Cabrera Bello (ESP) 70 69 72 68, Johan Edfors (SWE) 64 72 73 70
280 - Ricardo Santos (POR) 69 69 65 77, Rafael Echenique (ARG) 69 70 73 68, Raphael Jacquelin (FRA) 67 67 73 73, Michael Hoey 70 69 69 72
281 - Steve Webster 69 70 69 73, Edoardo Molinari (ITA) 68 71 70 72
282 - Ricardo Gonzalez (ARG) 69 70 69 74, Shane Lowry 68 69 75 70, Paul McGinley 66 70 71 75
283 - Alvaro Quiros (ESP) 67 73 69 74
284 - Paul Waring 70 69 75 70, Sam Little 72 68 69 75, Bradley Dredge 67 73 74 70
285 - Julien Quesne (FRA) 74 65 80 66
286 - Christian Nilsson (SWE) 71 68 68 79, Tano Goya (ARG) 67 73 74 72
287 - Mark Foster 68 70 77 72
288 - Peter O'Malley (AUS) 71 68 72 77