Aronian likes this move against the Ruy Lopes as well.
1. e2e4 A surprise. Matlakov is mainly a 1.d4 player. He rarely pushes his  king's pawn this early. 1... e7e5  2. g1f3  2... b8c6  3. f1c4  3... g8f6  4. d2d3  4... f8c5  5. c2c3  5... e8g8  6. e1g1 