Anand has been among the world’s elite for a quarter-of-a-century and he has piled up victories in every single major tournament. He was undisputed World Champion from 2007 to 2013, and successfully defended the title in three grueling matches against seasoned challengers. With his experience, maturity, impressive resume, and favorable matchups, he is the second most likely to win the tournament, after Nakamura. If he should win, he would pose the most significant problems to Carlsen, despite having lost two straight matches to him, and despite their age difference. In a third match, Anand would be even tougher.
Read more about Viswanathan Anand here.