KJ Choi cruised to his second career PGA Tour title when shooting his third straight three-under-par 68 for a seven-stroke victory at the Tampa Bay Classic.

With golf's elite in Ireland for the American Express Championship, Choi humbled the field, posting the most decisive win on the Tour this season with a four-round total of 17-under 267.

Glen Day made an early run at Choi but finished a distant second on 10 under at 274.

Vijay Singh had the most lopsided victory of the season before this week, winning the Houston Open by six strokes.

Choi won for the second time in his last 13 starts, with just one top-20 finish in between.

The Korean pocketed the 468,000 US dollar top prize and all but guaranteed himself a spot in the Tour Championship, which invites the top 30 players on the money list.

Collated final-round scores (USA unless stated, Par 71):

267 K.J. Choi (Kor) 63 68 68 68

274 Glen Day 68 67 70 69

275 Mark Brooks 73 65 70 67

276 Rodney Pampling (Aus) 65 68 73 70, John Morse 74 68 67 67

277 Paul Gow 68 72 69 68

278 Pat Perez 67 67 70 74, Craig Barlow 68 73 68 69

279 Matt Kuchar 70 69 70 70, Tommy Armour III 71 69 70 69, Donnie Hammond 70 66 69 74, Peter Jacobsen 68 74 67 70

280 Kent Jones 71 69 70 70, Steve Flesch 70 70 70 70, Joey Sindelar 68 71 70 71, Jay Williamson 72 68 71 69, Olin Browne 68 75 67 70, Billy Andrade 66 71 70 73, Jay Haas 70 68 71 71, Mike Heinen 70 70 71 69, John Huston 69 72 70 69

281 Boo Weekley 71 67 71 72, Luke Donald (Eng) 72 67 72 70, Tom Byrum 71 71 70 69, Brandel Chamblee 69 72 68 72, Jay Don Blake 71 71 70 69

282 Brenden Pappas (Rsa) 71 70 68 73, Stephen Gangluff 71 71 73 67, Glen Hnatiuk (Can) 72 71 71 68, Joel Edwards 69 73 70 70

283 Ken Duke 71 70 71 71, Bart Bryant 66 74 71 72, Woody Austin 74 68 69 72, Lee Janzen 68 70 73 72

284 John Senden 74 69 72 69, Tim Petrovic 70 71 75 68, Hidemichi Tanaka (Jpn) 69 68 72 75, Brent Geiberger 71 71 72 70, Steve Jones 73 70 72 69, Brett Quigley 70 70 69 75

285 Ty Tryon 73 65 72 75, Tripp Isenhour 71 71 74 69, Mike Sposa 69 72 72 72, Hal Sutton 72 71 68 74, Duffy Waldorf 75 67 70 73, Willie Wood 73 70 69 73, Bob Burns 72 71 69 73, Stewart Cink 73 70 72 70, Gabriel Hjertstedt (Swe) 72 71 73 69

286 Mathew Goggin 70 69 73 74, Paul Claxton 70 71 72 73, Shaun Micheel 70 73 69 74

287 Kenneth Staton 70 69 74 74, Mike Springer 70 73 72 72, Tommy Tolles 72 70 72 73, Brad Bryant 68 73 73 73, Franklin Langham 69 74 70 74, Jim McGovern 72 69 73 73

288 Heath Slocum 71 71 73 73, Eduardo Herrera 71 71 74 72, Brad Elder 70 70 71 77, Michael Bradley 69 74 77 68, Greg Kraft 75 67 75 71

289 Matt Peterson 69 71 75 74

290 Grant Waite (Nzl) 73 70 69 78, David Berganio Jr 69 73 75 73, Robin Freeman 74 68 73 75, Scott Gump 71 72 73 74, Per Ulrik Johansson (Swe) 73 69 74 74, Blaine McCallister 69 74 74 73

291 Carl Paulson 71 70 72 78

292 Rory Sabbatini (Rsa) 72 71 75 74, Stan Utley 70 73 75 74

293 Michael Clark II 72 71 74 76, Garrett Willis 71 72 74 76, Robert Damron 71 70 75 77, Dan Forsman 74 69 78 72, Kelly Gibson 70 71 76 76

294 Brett Wetterich 72 71 75 76

297 Bo Van Pelt 75 68 77 77

300 Larry Rinker 72 71 76 81