(Reuters) - American Ryan Moore fended off playing partner Brendon de Jonge of Zimbabwe in a final-round duel to win his second PGA Tour title by one shot at the $4.5 million Las Vegas Open on Sunday.

Tied for the lead overnight with de Jonge and Swede Jonas Blixt, Moore fired a five-under-par 66 in glorious afternoon sunshine at the TPC Summerlin to finish with a 24-under total of 260.

Moore covered the back nine in a flawless three-under 33 to shake off de Jonge in what proved to be a two-man Sunday shootout in the Nevada desert, the Zimbabwean having to settle for second after closing with a 67.

PGA Tour rookie Blixt, like de Jonge seeking a maiden title on the U.S. circuit, carded a 70 to secure third place at 20 under, two strokes better than Australian Jason Day (65). (Reporting by Mark Lamport-Stokes in Los Angeles; Editing by Frank Pingue)