Ian Poulter secured his first victory on American soil after edging out compatriot Paul Casey 4&2 in the WGC-Accenture Match Play final in Arizona.

Poulter made the stronger start and was 4 up after 14 holes before Casey reduced the deficit to two at the half-way stage on the 36-hole final.

But, after regaining a 4 up lead early on in the final 18, Poulter saw the lead reduced to 2 up on the 28th hole.

A missed Casey putt on the 32nd proved crucial as Poulter held on to win.

The victory, which earns Poulter a mammoth $1,400,000 (£907,113), also sees him move up to fifth in the world rankings, while Casey, who collected a cheque for $850,000 (£550,665), slots in one place behind his Ryder Cup team-mate in sixth.