The former world No. 1 and two-time Indian Wells runner-up was deep in a third-set tiebreaker with Fils, an in-form Frenchman who had already saved two match points, when he found himself jumping for joy as a final volley sailed long to secure a 6-4, 2-6, 7-6 (7) victory.

Two-time finalist Daniil Medvedev rallied from a break down in the final set to beat Arthur Fils 6-4, 2-6, 7-6 (9/7) on Thursday to reach the semi-finals of the Indian