Portugal star Cristiano Ronaldo has given a nation fresh reason to doubt his fitness ahead of their World Cup opener against Germany on Monday night, after The Guardian reported that he was able to train for just 15 minutes before limping out with ice on his left knee.
Ronaldo has been struggling for the last five weeks with tendinitis in his left knee, a problem which very nearly cost him the chance to lead Madrid into the Champions League final, although he did eventually win that battle to enjoy a momentous night and success in Europe's biggest club competition.
The 29-year-old's focus since that success has been on getting ready to represent Portugal in his third World Cup finals although judging from training earlier today he is far from full fitness.
Portugal started their session with 15-20 minutes of physical exercise before moving on to ballwork and tactical drills, but Ronaldo only took part in part one before leaving the field with a big ice pack over his troublesome knee.
A recurring thigh problem has not helped Ronaldo's quest to find a level capable of making Paulo Bento's starting XI for the Germany clash, although he did return to feature for 65 minutes in Wednesday's friendly against the Republic of Ireland.
The former Manchester United marksman is a supreme athlete though and will be extremely confident of being capable of playing a huge part in Portugal's plans to qualify from a group also containing Ghana and the United States.
Injury problems have affected a plethora of stars ahead of this summer's South American showpiece, with the likes of Franck Ribery and Radamel Falcao already forced to miss the tournament altogether.
Luis Suarez and Arturo Vidal are in the same boat as Ronaldo, with every neutral willing the trio to recover and make sure that every top player possible has the chance to make their mark at world football's biggest party.
Time is running out for Ronaldo though, with Bento now facing very realistic prospect of tackling a fearsome Germany side without the very player who dragged them kicking and screaming into the tournament with a truly awesome performance against Sweden in a memorable play-off tie.
Do YOU want to write for GiveMeSport? Get started today by signing-up and submitting an article HERE: https://www.givemesport.com/writeforgms