At 43, Rohan Bopanna is the oldest member of the top 10, and in fact, the top-100, in men’s doubles. (File photo/AP) There were times, in 2019 and early 2020, when Indian tennis player Rohan Bopanna would wake up with stinging pain in his knees and not want to step on the court. The mileage he had put on the pro tennis tour – more than 16.