Bob Estes fired a one-under par 70 to take victory at the Kemper Open by one shot from former champion Rich Beem on Sunday.

Estes' 11-under par total was enough to win his first PGA Tour event of the season.

Beem, Justin Leonard and Steve Elkington were all in contention before hitting into the bunker at the par-three 17th.

Beem, the 1999 winner, closed with a two-under 69 for a 10-under total.

Bob Burns, the third-round co-leader with Estes, went into the lead after a hole-in-one at the 11th.

But he lost his chance of a debut victory with a bogey at the 13th followed by a double-bogey at the 16th.

Fourth win

Australian Elkington finished in a tie with Burns for third place, while Leonard was a shot further back.

It was the eighth time in his career that Estes has held or shared the lead after 54 holes and gone on to win.

The victory was Estes' fourth on the PGA Tour and his third in the past two years after his wins at the FedEx St. Jude Classic and the Invensys Classsic in 2001.

Australian Greg Norman, who led at the halfway stage, shot a 73 to finish six shots behind Estes.

Leaderboard after the final round of the Kemper Open (US unless stated):

273 Bob Estes 65 69 69 70
274 Rich Beem 68 68 69 69
275 Bob Burns 68 66 69 72, Steve Elkington (Aus) 70 67 69 69
276 Jonathan Kaye 69 69 69 69, Justin Leonard 72 67 67 70
277 Harrison Frazar 69 66 72 70, Chris Smith 70 72 68 67
278 Duffy Waldorf 67 68 70 73, Jay Williamson 66 71 67 74, Olin Browne 70 70 69 69, Bart Bryant 72 70 66 70
279 Glen Hnatiuk (Can) 69 71 70 69, Bryce Molder 67 69 73 70, Brian Gay 66 69 73 71, Franklin Langham 63 72 70 74, Greg Norman (Aus) 67 65 74 73