After playing into the early hours of Sunday in a match that lasted over three hours and ending 12:45am, Roger Federerhad given a hint he may not continue playing in the French Open as he looked to protecting his knee.
He struggled to beat Dominik Koepfer after a pulsating three and a half hours.
The Swiss who turns 40 on August 8, underwent two knee surgeries in 2020 and is targeting a ninth Wimbledon title later this month on his favourite grass court surface.
He has won 20 Grand Slam men’s singles titles, an all-time record shared with Rafael Nadal. Federer has been world No. 1 in the ATP rankings a total of 310 weeks – including a record 237 consecutive weeks – and has finished as the year-end No. 1 five times.