Rising star Anthony Kim rallied to win the AT&T National at Congressional Country Club - and £500,000 - in Maryland on Sunday.

The 23-year-old was three shots off the lead at the start of the final round but shot a bogey-free five-under-par 65 to finish on 12-under 268 and win by two strokes from Swede Fredrik Jacobson.

Kim became the first American under 25 to win on the PGA Tour twice in the same year since Tiger Woods, who is out for the remainder of the season after undergoing reconstructive knee surgery.

Jacobson won a place in the Open Championship as a result of his performance which saw him come home in just 30 strokes, grabbing four successive birdies from the 14th.

Last Monday, Jacobson lost in a play-off in the Open international qualifier in Michigan.

Kenny Perry, twice a winner in recent weeks, and Rocco Mediate, loser of the play-off with Tiger Woods for the US Open, have also earned Open exemptions.

Perry, who chose not to try to qualify for Torrey Pines, has already said he does not plan to be at The Open either, and his spot will go the next highest player on the world rankings not yet in the field, most likely Colombian Camilo Villegas.

Mediate plays in this week's Scottish Open at Loch Lomond.

Collated final round scores & totals (USA unless stated, par 70):

268 Anthony Kim 67 67 69 65

270 Fredrik Jacobson (Swe) 67 72 66 65

271 Dean Wilson 69 70 65 67, Rodney Pampling (Aus) 66 69 71 65, Robert Allenby (Aus) 68 69 67 67, Jim Furyk 70 68 67 66, Nick O'Hern (Aus) 70 65 67 69, Tommy Armour III 67 69 66 69

272 Jeff Overton 66 65 71 70, Tom Pernice Jnr. 68 63 69 72, Alex Cejka (Ger) 67 71 68 66

273 Hunter Mahan 69 72 64 68, Patrick Sheehan 69 67 69 68, Pat Perez 71 67 67 68, Tim Herron 68 70 65 70, Bo Van Pelt 70 69 68 66, Peter Lonard (Aus) 74 69 67 63

274 Steve Stricker 71 64 66 73, John Senden (Aus) 70 69 67 68, Cliff Kresge 69 65 69 71, Rocco Mediate 73 68 67 66

275 D.J. Trahan 71 68 72 64, Charles Howell III 70 70 68 67

276 Steve Marino 65 70 72 69, Billy Mayfair 67 68 72 69, Michael Allen 70 68 70 68

277 Charles Warren 69 72 68 68, Robert Garrigus 68 70 70 69, John Merrick 71 64 72 70, Davis Love III 70 73 69 65, Kevin Sutherland 69 71 70 67, Parker McLachlin 71 66 70 70, Kevin Streelman 69 70 71 67, Fred Couples 71 68 67 71, Johnson Wagner 70 68 71 68

278 Brad Adamonis 68 71 70 69, Nick Watney 69 72 67 70, Todd Hamilton 70 67 74 67, Jeff Maggert 70 65 72 71, Bill Haas 70 70 69 69, Jose Coceres (Arg) 69 68 73 68, Camilo Villegas (Col) 71 70 69 68, Tim Clark (Rsa) 73 69 67 69

279 Bob Estes 66 73 67 73, Andres Romero (Arg) 71 71 70 67, Todd Demsey 70 70 68 71, Rich Beem 71 68 69 71, Mark Wilson 70 73 67 69

280 George McNeill 68 74 68 70, J.B. Holmes 70 71 68 71, Vaughn Taylor 70 73 64 73, KJ Choi (Kor) 68 71 71 70, Olin Browne 69 70 72 69

281 Billy Andrade 70 73 66 72, J J Henry 73 67 67 74, Lucas Glover 71 71 70 69, Jonathan Byrd 70 71 70 70, Shane Bertsch 72 69 67 73, Tim Wilkinson (Nzl) 71 72 68 70

282 Ryan Armour 72 71 67 72, Jesper Parnevik (Swe) 68 71 74 69, Stuart Appleby (Aus) 67 74 70 71

283 Ben Crane 71 70 72 70, John Rollins 68 70 73 72, Stephen Leaney (Aus) 71 71 71 70, Gavin Coles (Aus) 69 71 72 71, Fred Funk 70 69 68 76

285 Justin Bolli 74 68 71 72, Corey Pavin 73 67 73 72

286 Jim McGovern 68 73 70 75, Frank Lickliter II 66 74 70 76