Ian Poulter and Luke Donald have failed to progress from the first round of the WGC World Match Play at Dove Mountain in Arizona.

Former world number one Donald crashed out 5&4 to Italian Matteo Manassero, while 2010 winner Poulter lost 2&1 to Rickie Fowler of the USA.

Fellow Briton Rory McIlroy made it through the the last 32 of the competition by seeing off Boo Weekley 3&2, but there was no such joy for Lee Westwood, who was beaten 5&3 by Harris English.

Ex-US Open champion Graeme McDowell came back from four down after seven to defeat Gary Woodland at the first extra hole, while Sergio Garcia got the better of Australian Marc Leishman over 22 holes.

American Dustin Johnson, joint eighth in the world with Garcia, was beaten 4&3 by Peter Hanson of Sweden.

Last-32 matches:

Henrik Stenson vs. Louis Oosthuizen

Brandt Snedeker vs. Webb Simpson

Jason Day vs. Billy Horschel

George Coetzee vs. Patrick Reed

Rory McIlroy vs. Harris English

Charl Schwartzel vs. Jim Furyk

Sergio Garcia vs. Bill Haas

Rickie Fowler vs. Jimmy Walker

Justin Rose vs. Ernie Els

Jason Dufner vs. Matteo Manassero

Matt Kuchar vs. Ryan Moore

Jordan Spiethl vs. Thomas Bjorn

Richard Sterne vs. Hunter Mahan

Graeme McDowell vs. Hideki Matsuyama

Peter Hanson vs. Victor Dubuisson

Bubba Watson vs. Jonas Blixt