Hopefully with the first set in his back pocket, Nadal can relax, loosen up, and be a bit more aggressive with his baseline play. I'm disappointed to see him give up the aggressive position he was taking on his return in his prior matches but it's somewhat understandable, though I do like to see him do it on Anderson's second serve.
Anderson missing those inside out forehands in that final game hurt him, and that's why he went back to Nadal's backhand in the subsequent points while taking some racket head speed away. Great serving from Rafa on break points though.