Meanwhile, Egypt star Mohamed Salah did not play against Uruguay.
Salah has not played since Liverpool's 3-1 defeat to Real Madrid and Los Blancos defender Ramos faced criticism from certain quarters in the aftermath of the match.
Egypt will be making its first World Cup appearance in nearly three decades today, but will be a sizable underdog against a Uruguay squad with plenty of star power.
Hosts Russia got the World Cup off to a flying start by hammering Saudi Arabia 5-0 in the opening game in Moscow.
The star striker, who turned 26 on Friday, suffered the injury three weeks ago in Liverpool's Champions League final defeat to Real Madrid.
"I am optimistic that he will be with us, I think he has a great chance to participate, he has been training with the ball and his condition has improved compared to the last days", Cuper wrote on Facebook.
Defender Jose Maria Giminez headed home past goalkeeper Mohamed El Shenawy in the 90th minute of the second game of the tournament held every four years.
Egypt offered little in Salah's absence and are now under pressure heading into a clash with Russian Federation, while Uruguay - and particularly Suarez - can breathe a sigh of relief.
Luis Suarez and Edinson Cavani each passed up opportunities to clinch the points against a Pharaohs side who kept Mohamed Salah on the bench, but it was centre-back Gimenez who proved the hero. Perhaps Cuper was conserving Salah for Egypt's remaining two games, but the Argentinian could have risked him. Russia's game is fateful and hard because of our defeat against Uruguay.
"It's obviously the tougher game of the group stage, so looking at the games with Russian Federation and Saudi Arabia, those are the games where you expect Salah to come back in and perform the way we know he can perform".
Tabarez is leading Uruguay into a fourth World Cup after a first trip in 1990.
The Barcelona player was making his first World Cup appearance since leaving Brazil in disgrace following his bite on Italy's Giorgio Chiellini but endured a frustrating afternoon.
Cavani and Salah meet at the end of the game.