The Lions signed Alexander on Wednesday, Kyle Meinke of MLive.com reports.

Alexander (knee/calf) was placed on injured reserve Tuesday, Chris Brown of the Bills' official site reports.

Alexander (knee) was ruled out for Sunday's game against the Redskins.

Alexander has a knee issue and is not practicing Wednesday, Chris Brown of the Bills' official site reports.

Alexander (knee) is officially listed as questionable for Sunday's game against the Patriots.

Alexander (knee) missed Friday's practice and is questionable for Sunday's game against the Patriots, Chris Brown of the Bills' official site reports.

Alexander signed a one-year, $1.375 million contract with the Bills on Friday, Mike Rodak of ESPN.com reports.

Alexander (concussion) was a full participant at Thursday's practice, Brady Henderson of ESPN.com reports.

Alexander suffered a concussion in Monday's win over the Vikings, Bob Condotta of The Seattle Times reports.