Another unusual health problem has arisen while playing on grass in the UK.
Fery began suffering from a nosebleed last month at Queen’s Stadium and continued through his matches at Wimbledon.
Feri says he doesn’t know the cause of the problem, but plans to “figure it out” after the tournament.
Nosebleeds are usually caused by several factors, including high blood pressure, irritation from allergies such as hay fever, or dehydration.
Ward suggested that this may be due to the “heightened senses” that Fery is experiencing during what has become the most successful period of his professional career.
Jonathan Joseph, an experienced consultant ear, nose and throat surgeon, says stress can be a factor in nosebleeds.
“In all different areas of medicine, stress makes the problem worse than it otherwise would be, including nosebleeds,” Joseph, a rhinologist at NHS University College London Hospitals and London Clinic, told BBC Sport.
“People who are about to take a serious exam may experience nosebleeds just due to stress. The same thing happens with tennis players.”
Whatever Fery’s problem, he hopes the only bloody territory he faces on Monday is the Grand Slam quarter-finals.