Injury-hit Juan Martin del Potro bid an emotional farewell to his fans while casting doubt on plans to play next week in Brazil after losing 1-6, 3-6 to fellow Argentine Federico Delbonis in the first round of the Argentina Open. The 33-year old former US Open champion suffered a knee injury and told fans on Saturday that this month’s tournaments in Argentina and Brazil would be his last.

Del Potro’s defeat on Tuesday came in his first match since March 2019 and he hung his bandana on the net afterwards in what the adoring home crowd and media interpreted as a final farewell.

Asked if fans would see him play again, Del Potro said: “I don’t know if it’s going to happen, because the pain in my knee is very high.”

In what was deemed to be his final match in front of his home crowd, Del Potro’s mother, Patricia, was in the stands for the first time in his professional career. Other members of his family were also among the spectators at the Buenos Aires Lawn Tennis Club. An emotional Del Potro failed to hold back tears before stepping onto the line to serve at 3-5 down in the second set as familiar chants of “Ole Delpo” reverberated around the stands.

“It’s difficult to explain how I felt on the court. So many emotions,” he said. “The atmosphere was crazy, the people were crazy, and I had one of my best ever matches in my career with the crowd.”

Asked if he could still play the Rio Open next week, a tearful Del Potro was unclear.