All of this is very natural as well as Black's next move.
1. e2e4  1... e7e5  2. g1f3  2... b8c6  3. f1b5  3... a7a6  4. b5a4  4... f8c5  5. e1g1  5... g8e7  6. c2c3  6... e7g6 6...Ba7 is the modern continuation according to my Megabase. 7. d2d4  7... c5a7  8. c1e3 A natural move that Nakamura has not faced yet. 8... e8g8  9. b1d2  9... d7d6  10. f1e1  10... g8h8 