MUNICH, 28 Jun 2015 (AFP) - The Spaniard was five shots adrift of England's overnight leader James Morrison heading into day four, but he carded an unblemished fourth round 66, featuring six birdies, to pip Sweden's Henrik Stenson by a single stroke on 17-under par.
The 32-year-old Larrazabal went out at breakneck speed, sinking five birdies on the front nine to put him right into contention. And as his rivals fell away, a crucial 15-foot birdie on the 16th saw off the challenge of Stenson.
"I'm very tired," said Larrazabal.
"I knew that I was in a good position, and I knew that I had to start very fast. I had to start with a few birdies in the first few holes, and I started very well.
"I think I was five under for the front nine, hitting the ball great -- as good as I've hit it all year, and my putting was awesome. I made a lot of great putts.
"Coming in (on the back nine), it was tough. You have a lot of holes with a lot of trouble," added the Spaniard.
Stenson, ranked number seven in the world, fired a seven-under-par 65 thanks to five birdies and an eagle on the 11th to give him the clubhouse lead, but Larrazabal's intervention denied Stenson the title.
It's a fourth win on the European Tour for Larrazabal and a second at Munich's Eichenried Golf Club after he won the event in 2011, beating Sergio Garcia in a play-off.
Overnight leader Morrison, however, fell away with a five-over 77 to finish in a six-way tie for 11th place on 11 under par.
Chris Paisley of England was two shots adrift of his compatriot Morrison at the start of play, and he was denied a share of second place when his long birdie attempt on the 18th fell just short; he had to settle for third place on 15 under, two shots behind Larrazabal.
Collated BMW International Open fourth round scores at the Munchen Eichenried Golf Club on Sunday (GBR/IRL unless stated, par 72):
271 - Pablo Larrazabal (ESP) 70 66 69 66
272 - Henrik Stenson (SWE) 67 71 69 65
273 - Chris Paisley 69 67 66 71
274 - Kiradech Aphibarnrat (THA) 67 71 68 68, Retief Goosen (RSA) 68 70 69 67, Carlos del Moral (ESP) 69 71 65 69
275 - Peter Hanson (SWE) 69 68 67 71, Michael Hoey 69 65 71 70
276 - Daniel Gaunt (AUS) 65 73 70 68, David Howell 69 70 72 65
277 - Ross Fisher 71 69 67 70, Tommy Fleetwood 67 74 69 67, David Horsey 70 68 69 70, Rafael Cabrera Bello (ESP) 65 67 74 71, James Morrison 67 66 67 77, Thongchai Jaidee (THA) 68 67 68 74
278 - Morten Orum Madsen (DEN) 71 69 71 67, Bradley Dredge 69 68 70 71, Simon Wakefield 71 70 69 68
279 - Victor Dubuisson (FRA) 72 67 67 73, Hennie Otto (RSA) 71 69 71 68, Magnus A Marlsson (SWE) 70 68 72 69, Pedro Oriol (ESP) 70 71 68 70, Darren Clarke 70 71 69 69, Marcel Schneider (GER) 68 70 71 70, Julien Quesne (FRA) 68 71 72 68
280 - Kristoffer Broberg (SWE) 71 69 68 72, Bernd Wiesberger (AUT) 71 68 72 69
281 - Lucas Bjerregaard (DEN) 71 67 71 72, Lasse Jensen (DEN) 65 69 73 74, Maximilian Kieffer (GER) 72 69 69 71, Jaco Van Zyl (RSA) 70 68 70 73, Gary Stal (FRA) 70 70 67 74, Johan Carlsson (SWE) 69 69 75 68, Shane Lowry 72 67 69 73, Paul Lawrie 68 71 69 73, Thorbjorn Olesen (DEN) 71 68 69 73, Victor Riu (FRA) 67 73 70 71, Christopher Doak 71 70 69 71
282 - Anthony Wall 70 69 70 73, Andrew Johnston 66 72 72 72, Edouard Espana (FRA) 69 69 72 72, Damien McGrane 69 72 69 72, Garth Mulroy (RSA) 69 71 69 73, Anders Hansen (DEN) 69 69 71 73, Florian Fritsch (GER) 68 72 74 68
283 - Tyrrell Hatton 71 70 66 76, Soren Kjeldsen (DEN) 73 68 73 69, Thomas Bjorn (DEN) 71 68 72 72, Marcel Siem (GER) 71 70 70 72, Gregory Bourdy (FRA) 75 66 73 69, Oliver Farr 69 71 72 71
284 - Alejandro Canizares (ESP) 70 66 72 76, Peter Lawrie 70 67 77 70
285 - Anton Kirstein (GER) 70 71 69 75, Jorge Campillo (SESP) 69 71 75 70, Mark Foster 76 65 69 75
286 - Joakim Lagergren (SWE) 68 69 75 74, Eddie Pepperell 69 70 78 69
287 - Tjaart Van Der Walt (RSA) 68 72 77 70
288 - Joost Luiten (NED) 72 68 77 71, Jake Roos (RSA) 71 70 74 73
289 - Alvaro Velasco (ESP) 71 69 72 77
290 - Kevin Phelan 68 71 76 75
291 - Matt Ford 70 69 76 76