Bowers (knee) didn't participate in practice Thursday, Vincent Bonsignore of the Las Vegas Review-Journal reports.
Bowers also missed Wednesday's session, and another DNP a day later has the tight end trending toward missing a third straight game Sunday against the Chiefs. If Bowers remains sidelined this weekend, fellow TE Michael Mayer, who had five catches (on seven targets) for 50 yards and a TD in a Week 6 win over the Titans, once again would be in store for added opportunities in the Raiders offense.