The Ravens got some good news with the return of Pro Bowl center Tyler Linderbaum and right tackle Patrick Mekari to practice Thursday in Owings Mills.

Linderbaum (knee) was limited while Mekari (knee) was a full participant. But not all the news was good ahead of a showdown against the stout defensive front of the Buffalo Bills on Sunday night at M&T Bank Stadium.

Left guard Andrew Vorhees (ankle) did not practice for a second straight day.

If he can’t go Sunday, the Ravens could go with Mekari or perhaps the much-maligned Ben Cleveland against Buffalo and defensive tackle Ed Oliver.

On defense for the Ravens, tackle Michael Pierce (shoulder) returned after not practicing Wednesday, while inside linebacker Roquan Smith (ankle) was a full participant after being limited.

For Buffalo, linebacker Terrel Bernard (pectoral) was limited after not practicing Wednesday but has already been ruled out for Sunday by coach Sean McDermott, as has cornerback Taron Johnson (forearm), who did not practice for a second straight day.

Cornerback Kaiir Elam (neck) was limited for a second straight practice, while offensive lineman Tylan Grable (groin) was out and has been placed on injured reserve. Quarterback Josh Allen was a full participant for a second day in a row, but remains listed on the injury report after hurting his left hand in Buffalo’s season-opening win over the Arizona Cardinals.