LYNDHURST, N.J., Aug. 27, 2012 /PRNewswire/ -- Citizen Watch Company has signed Victoria Azarenka, the #1 player on the WTA Tour, as the newest international Brand Ambassador for the Citizen Eco-Drive Unstoppable media campaign.  Citizen makes this announcement on the occasion of Citizen's 20th Anniversary as the Official Timekeeper and Official Watch of the US Open Tennis Championships, held in Flushing Meadows, New York.