Baseball

Detroit Tigers -- Signed P Cade Gaspar and assigned him to Single-A Lakeland.

Milwaukee Brewers -- Signed 3B Antone Williamson and assigned him to Rookie-League Helena.

New York Mets -- Signed P Sean Johnston.

Toronto Blue Jays -- Optioned OF Shawn Green to Triple-A Syracuse. Announced they will activate P Danny Cox from the DL today.

Football

Arizona Cardinals -- Announced the retirement of LB Steve Hyche.

Miami Dolphins -- Named Bill Zimpfer radio play-by-play announcer.

Minnesota Vikings -- Signed TE Brent Novoselsky, WR Odessa Turner and K Cary Blanchard.

Hockey

New Jersey Devils -- Matched the offer sheet tendered to D Scott Stevens by the St. Louis Blues.