There was huge sympathy from Uruguayans towards defender Jose Gimenez, whom cameras caught crying minutes before the end as he realised it was too late to turn the game around.
Cavani worked out on the pitch of the Borsky sports centre in Nizhny Novgorod and took a short walk, then sprinted, practiced a small slalom with the ball and finally kicked the ball gently.
If Cavani is unable to recover his replacement will also come from the Spanish Liga Santander with either Cristhian Stuani or Maxi Gomez in line to play.
"I do not know what's going on in his head, but this is the World Cup".
This is Russia's best World Cup run since the break-up of the Soviet Union.
He also apologized to the fans for failing to qualify for the semi-finals. The teams hardly created any clear goalscoring opportunities and France, despite enjoying a majority of possession, lacked that killer instinct they showed against Argentina.
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Can we just go ahead and forget about this whole daft faux-kerfuffle now? "It was nice to get it off our back and we can move forward now".
"We observe what happens during the match and we have people who know how to manage the game, they know when to stop and when to move in attack".
Starting line-ups for the World Cup quarter-final between France and Uruguay in Nizhny Novgorod on Friday.
The Atlético Madrid star has been involved in all four of France's games at the World Cup this summer, scoring in their first match against Australia and most recently in a thrilling win over Argentina, with both goals coming from the penalty spot.
"When we went 2-0 down [against Japan] there was the psychological feeling of "OK, we have nothing to lose", which freed us up", said Red Devils manager Roberto Martinez.
"But I know the desire and attitude he has and we know that if it was up to him he will be there".
France's victory was merited as it was they who had the bulk of possession and always looked the most likely to score.
Cavani's absence through injury is a huge blow for the South Americans after the powerful striker's incredible performance in the last-16 against Portugal. "Today we played against opponents that were stronger than we were".