TUESDAY, 2:52pm: The Athletics are also in on Zaun, tweets John Hickey of AOL Fanhouse.
MONDAY, 4:48pm: Gregg Zaun is on the Cardinals' radar, according to Joe Strauss of the St. Louis Post-Dispatch (on Twitter). However, the team hasn't spoken to Zaun's representatives so far at the Winter Meetings. Earlier today, Yahoo's Tim Brown named the Mariners and Cardinals as possible suitors for the veteran catcher (Twitter link).
Zaun missed the second half of the 2010 season after undergoing surgery on his right labrum in June. Zaun, 40 in April, should still be able to reach base if healthy; he has a career .344 on base percentage and posted a .350 OBP before getting hurt this summer. Last month, Zaun said he would prefer to return to the Rays.