Name that character actor

From the "What was he thinking " file.

Mark Strong excellence in acting.

Before their scene, George Clooney told Mark Strong to make the scene look real - he ended up in traction.

 
An excellent and almost scary portrayal of the character Nicky Santoro

The character of Nicky Santoro was actually based on Anthony "the ant" Spilotro.
Robert DeNiro's character of Sam "Ace" Rothstein was based on the true story of Frank "Lefty" Rosenthal, named the best handicapper in the world.
 
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