4. Juan Martin del Potro will not have a good season
Having been a huge supporter of Juan Martin del Potro for so many years, I would love to be proven wrong with this one. However, looking at the seriousness of his latest injury and his fitness struggles throughout his career, it is difficult to see Del Potro returning to the tour and having a consistent, successful, injury-less season.
The Argentine has showed tremendous spirit and will power to make several successful comebacks to the tour in the past few years. But right since his first hiatus in 2009, he hasn't quite been the same player.
Career-threatening injuries and surgeries have prevented Del Potro from being able to play consistently at the top level. He had to withdraw from the Australian Open, Indian Wells and Acapulco in 2019, and then had to end his season even before Wimbledon.
When he is playing, there is no question about the talent of the big-serving gentle giant - as seen from his match against Novak Djokovic in Rome this year, where he almost beat the then World No. 1. But his constant struggles with injuries may make it difficult for him to have a successful season in 2020.
What is the foot injury that has troubled Rafael Nadal over the years? Check here