Who is the actor that Paul Dano replaced in the upcoming movie "There Will Be Blood"?

from nyt aticle..."Anderson realized that the second lead actor, who plays Plainview’s nemesis, was not strong enough. He was replaced by the versatile young actor Paul Dano, but three weeks of scenes with Day-Lewis needed to be reshot. During “Gangs of New York,” Day-Lewis would stay in character and deliberately glare at his co-star, Leonardo DiCaprio, mirroring the contentious dynamic that these men had in the film. While DiCaprio withstood the pressure (and Dano thrived on it) there are reports that the first actor suffered from intimidation. “It just wasn’t the right fit,” Anderson explained diplomatically. "