troy seems to be blaming rose for his straying, is it her fault?

No, I don't believe it is......

The scene moves into one of the play’s most dramatic confrontations. Troy admits to Rose, while she is going about her daily duties as a housewife, that he has been unfaithful to her. It is with some irony that Troy has such a difficult time telling Rose that he is going to be a father since she could question whether he has been much of a father to Cory or Lyons. The tone of the play now becomes angrier and more sorrowful and will remain this way through the second act. Rose cries out to her husband that she tried to be everything for him that a wife should be.

The audience now sees Troy for the truly selfish person that he is. The first act was spent with Troy waxing eloquently, if harshly, on the necessities of responsibility and duty to family. It is clear now that those words were hollow. When Rose tries to reach out to him, Troy only retreats further into himself, claiming that he was with Alberta because she gave him feelings that his family could not give him. Troy is now a man of inconsistency.

It is important to note the choice of language that Troy reverts to after admitting his affair. Troy attempts to explain his actions in the mode of a baseball announcer. This only underscores his self-centeredness, however. Troy creates a game out of his life and places himself as the star player. He uses baseball analogies to try and explain the kind of life that was handed to him versus the kind of life that he desires for himself. The analogies, however, fall flat and Rose is unconvinced. Rose tries to explain to him how his selfishness takes from her and Cory as well, but Troy is not willing to hear this. Troy’s anger almost explodes into violence before Cory diverts his rage. He once again uses baseball terminology to threaten Cory but it is Troy who is now the one striking out.