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

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

Novak Djokovic has criticized the Indian Wells playing conditions in light of his unexpected ouster from the competition. The Serbian rising star was shocked to lose to world No. 85 Botic van de Zandschulp 2-6,