Rafael Nadal has suffered more than a fair share of injuries during his tennis career but his latest is a first for the Spanish great.
The 19-time Grand Slam champion asked to postpone a virtual tennis charity match against a gamer on Monday because of a "back issue", according to Madrid Open Virtual Pro tournament director Feliciano Lopez.
Nadal is one of 32 stars competing in a video game version of the Spanish capital's clay-court event, which should have taken place next week.
After beating Canada's Denis Shapovalov in his opening match of the main tournament between ATP players, Nadal was set to play Spanish YouTuber DjMariio in a separate charity match.