Novak Djokovic was surprisingly upbeat after his shock Indian Wells defeat at the hands of Botic van de Zandschlup - but his smile has left some onlookers concerned

The Indian Wells Masters saw a huge shock as Novak Djokovic was surprised by World No. 85 Botic Van De Zandschulp in the opening round. The Dutchman beat the 24-time Grand Slam champion 6-2, 3-6, 6-1 to blow the bottom half of the draw entirely open.

Novak Djokovic was all smiles in his post-match press conference after a shock defeat at Indian Wells, but his reaction to the loss has raised suspicions over his mental state