Aronian is ready to play the Marshall, even against the Anti-Marshall. According to Megabase, this move is recently more successful than 9...d6.
1. e2e4  1... e7e5  2. g1f3  2... b8c6  3. f1b5 Nakamura decided to stick to the Ruy Lopez, but today his approach will be different. 3... a7a6  4. b5a4  4... g8f6  5. e1g1  5... f8e7  6. f1e1  6... b7b5  7. a4b3  7... e8g8  8. h2h3  8... c8b7  9. d2d3 