Without a doubt, one of the talking points at this year’s US Open so far has been about Novak Djokovic and his future in the sport.

Djokovic, a four-time champion at Flushing Meadows, lost in the first round for the first time in his career to Mariano Navone. Throughout the match, he struggled physically and was sick with a stomach issue. A problem linked to an ongoing medical issue he is dealing with. However, Djokovic hasn’t disclosed any specifics on what he is dealing with, so it is impossible for those outside his circle to establish the severity of the problem he is facing.

At the age of 39, might this now be the first time for the 24-time Grand Slam champion to retire from the sport?

Ubitennis founder and tennis historian Steve Flink looks at the reasons for and against Djokovic retiring.