American Brandt Snedeker, a three-times winner on the US PGA Tour, has withdrawn from the US Open because of a rib injury.

The 31-year-old Snedeker, who clinched his most recent title on the US circuit at the Farmers Insurance Open in January, will be replaced in the 156-strong field by American amateur Jordan Spieth.

A twice former US junior amateur champion, Spieth will tee off with compatriots Bill Haas and Nick Watney in Thursday's opening round at Olympic Club.

Reuters