Just when it looked as though he were on the verge of a breakthrough, 7-foot center (Andrew) Bogut is back on the shelf, and the key question is for how long.

The club announced Friday night that Bogut is “out indefinitely” with back spasms after playing in games on consecutive nights for the first time this season on Tuesday and Wednesday.

Bogut began suffering symptoms Thursday, according to Jackson, and did not practice with the team. He had an MRI exam on his back Friday, but the team had not yet received the results.

via Carl Steward of the San Jose Mercury News