comment: A natural move to exchange rooks and place the bishop on g7, but this is a clear mistake.
context: 1. e2e4  1... e7e5 Sarana is known as a fierce Najdorf player, but I suppose he decided to prepare a more solid defense against such strong opponents. For the spectators it's always a pity when the Najdorf gets replaced by something else. 2. g1f3  2... b8c6  3. f1c4  3... g8f6  4. d2d3  4... f8e7  5. e1g1  5... e8g8  6. b1c3  6... d7d6  7. a2a4  7... a7a5 A modern move, stopping the advance of White's a-pawn. This plan has been tried by some very strong players, including Carlsen and Artemiev. 8. f1e1  8... c8e6  9. c3d5 Judging by the opening outcome of this game, this move is an excellent way to develop the initiative. 9... e6d5  10. e4d5  10... c6b4  11. d3d4 The only move to justify 9.Nd5. 11... e5e4  12. f3d2  12... c7c6 The best chance to fight for equality. 13. c2c3 A very accurate move. I suppose, from the time Tabatabaei spent to arrive at this position, that it was found over the board. 13... b4d5 A good reply. 14. d2e4  14... f6e4  15. e1e4  15... d5f6  16. e4e1  16... d6d5  17. c4d3 With the bishop pair, White has a slight advantage. This is as good as it gets when playing against 1.e4 e5. Give me this position for White any day and I'll be happy. 17... g7g6 A new and logical move, restricting the bishop on d3 and preparing …Re8-Bf8-g7. The problem is that it releases the h6-square for the dark-squared bishop. 18. g2g3 Giving the king some air. White has a long-term positional advantage (the bishop pair), so no rush is necessary. 18... f8e8  19. d1f3 