After a shocking group league exit from the Rio Olympics, Saina Nehwal cited an inflammation in her right knee as the reason which hampered her on-court movement.
World No 5 lost her second group league encounter 18-21, 19-21 to World No 61 Ukraine's Maria Ulitina to crash out of the competition.
"I had a knee pain and could not give my best. It was heavily strapped, and I tried my best. My movements were not smooth and were painful. It's heartbreaking loss. I also feel very bad about it," Saina said.