Ursua exited Saturday's preseason game against Denver with a knee injury and has been ruled out from returning, John Boyle of the Seahawks' official site reports.
Ursua was taken off on a cart, so the injury has the potential to be serious. However, there has been no official diagnosis to this point. Ursua suffered a knee injury during OTAs earlier this offseason, though it's unclear if the issues are related.