Rory McIlroy drew comparisons with the game's two greatest living major winners for his WGC-Cadillac Match Play win over Gary Woodland at Harding Park.

Rory McIlroy ended up watching the Mayweather - Pacquiao bout in the media centre after his  clash with Paul Casey went 21 holes before darkness called a halt to proceedings at Harding Park.

Jordan Spieth lost to Lee Westwood and Rory McIlroy came back from two down with two to play to beat Billy Horschel at the 20th. Even the dead rubbers were lively as the much maligned WGC - Cadillac World Match Play final managed to whittle the field down from 64 to 16 for Saturday's straight knockout rounds at Harding Park.

The churlishness of Jason Dufner when it came to conceding putts provoked a tit-for-tat response from an irked-looking Rory McIlroy who still crushed the former US PGA champion 5 and 4 in the first round of the matches in the WGC – Cadillac Match Play in San Francisco.