Rory McIlroy is off to a winning start at the Match Play Championship.
The world number one beat American Jason Dufner 5 and 4 in his opening match in San Francisco.
But some of McIlroy's European Ryder Cup team-mates didn't fare so well.
Steven Gallacher, Justin Rose and Ian Poulter all lost.
Elsewhere Graeme McDowell lost to Shane Lowry by 1