Stanford All-American offensive lineman David Yankey will not be available for the Washington State game on Saturday because of a family situation.
The senior, who was named Co-Offensive Player of the Game last Saturday against Arizona State, returned to his home in Roswell, Ga., to be with family.
"He is healthy and in good standing on the team and we ask that you respect his privacy," Stanford official Kurt Svoboda wrote in a release. "We will announce when David is able to rejoin the program."
Sophomore Joshua Garnett, who grew up near Seattle, will start at left guard and will wear uniform number 51.
"He's in our thoughts and prayers . . . He'll be with his family this week. We hope 2 get him back soon," Cardinal coach David Shaw said, according to a tweet from Andy Drukarev, who covers the team regularly for Stanford Rivals.
Yankey did not play in the fourth quarter of Stanford's 42-28 victory over the Sun Devils on Saturday.
He's on several preseason All-American teams and numerous watch lists.
Stanford senior Aly Gleason, a goalkeeper for the Cardinal women's soccer team, was named a first team USA Rugby All-American on Tuesday.
The Stanford rugby team reached the national semifinal match in May, losing to Norwich on a late penalty kick. The Cardinal was the national runner-up in 2012.
Stanford senior center Jamie Lawrence, the club president and team captain, was named to the second team.