Novak Djokovic has endured “a couple of false dawns” since his comeback from a long-standing elbow injury but critics would be foolish to right off the former world No 1, according to Mark Petchey.

The 12-time Grand Slam champion returned to competitive tennis at the Australian Open in January after a six-month hiatus and reached the fourth round but has since struggled to recreate his form.

Djokovic dominance on Grand Slam stage

The former world No 1 won 11 majors between January 2011 and June 2016.

Djokovic took further time away from the game to aid his recovery after his Melbourne exit but suffered shock opening defeats to Taro Daniel and Benoit Paire at Indian Wells and Miami respectively.

The Serbian then disposed of Andre Agassi and Radek Stepanek from his coaching team within days, before announcing he had returned to former confidant Marian Vajda ahead of the clay court season.