After coming out strong, FX’s new series The Americans suffered a harsh ratings body blow last night. The Eighties-era spy series was down almost 40% Wednesday from its premiere a week ago. The one-hour episode of The Americans fell from 3.22 million overall viewers watching its nearly two hour debut on January 30 to just 1.97 million last night. That’s a drop of 39% from week one to two. Far more than the 23% decline that American Horror Story had the second week of its first season on FX on October 12, 2011. The decline among Adults 18-49 for week two of The Americans was only slightly less harsh. The series fell 32% in the key demo from 1.57 million to 1.07 million. On the other hand, last night’s Americans increased its total viewership 67% from the previous half hour of its movie lead-in of Tron: Legacy. The movie’s overall viewership was also basically half of the previous week’s lead-in of the Tom Cruise movie Knight And Day. The premiere of The Americans, starring Matthew Rhys and Keri Russell as two sleeper KGB spies living in suburban Washington D.C., had bested the debuts of American Horror Story and Sons Of Anarchy.