Oxenhope tennis talent Fran Jones has been forced to withdraw from this week’s Colsanitas Cup in Bogota after collapsing on court.
In footage of the incident posted to social media, the 24-year-old appeared to stagger after failing to return a serve from Argentina's Julia Riera in the third set of the round of 32 match and was unable to return to play.
She fell to the ground and was removed from the court in a wheelchair.
Jones, who was only two points from defeat, had a quick turnaround after winning her eighth career title in Brazil at the weekend, but playing at altitude certainly had an effect too.
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She has since reassured her fans on her Instagram Story, writing: “Aside from my low-level pre match warm up, my first exposure to the limited oxygen levels at a high intensity was my match.
"As the match went on, I worked hard to give myself the opportunity to stay competitive while trying to get used to the conditions but progressively struggled.
She said "blurry vision" led to her collapse and she experienced no cramping.
Jones added: "Overnight we conducted multiple studies and it seems my heart worked a little too hard on the day but thankfully no longer term impact.”
The British player, ranked 129, has to deal with physical challenges on court after being born with the rare genetic condition Ectrodactyly Ectodermal Dysplasia.
She is missing one finger on each hand and has only seven toes, and finishing matches has been a challenge throughout her career, with Jones suffering bouts of severe cramp.
This is the 19th time in her career she has retired during a match and the second time this year.