STANFORD, Calif. (AP) - There will be no quarterback change at Stanford this week. And if David Shaw had his way, there will be no questions about the quarterback's job status either.

The second-year coach stood behind redshirt junior Josh Nunes on Tuesday, delivering an unprompted and unscripted message at the beginning of his weekly news conference that his struggling quarterback will start for the No. 18 Cardinal (3-1, 1-1 Pac-12) against Arizona (3-2, 0-2) on Saturday.

The only quarterback change Shaw wants to see is a change in Nunes' play.

Nunes completed 18 of 37 passes for 170 yards and an interception in Stanford's 17-13 loss at Washington last week. The offense converted 5 of 18 third downs, never scored a touchdown and looked lost for the first time since Andrew Luck left.