“I know I’m physically in a better place than I was at the end of 2019, from all of the results from all of the gym work and stuff,” he said.
“When I finished in Antwerp [his last tournament win] in 2019, I felt good physically and then the next time I got on the court I had an issue with my groin and it took ages for that to get better.
“Physically, I feel good right now but you don’t know what’s around the corner and that’s the thing I’ve been more anxious and apprehensive about, more than my tennis.”
The three-time slam winner is hoping to win his first ATP title since 2019 in Rotterdam, but claimed he is struggling with the absence of fans.