A natural move that Nakamura has not faced yet.
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 