Russia are all but certain to make the second round of the World Cup in front of their home fans after a 3-1 victory against Egypt.
Only days after the country came in to this tournament as the lowest-ranked team, they have scored eight times in their first two matches, following a 5-0 first-up drubbing of Saudi Arabia.
Against Egypt, a three-goal blitz in the space of 15 minutes early in the second half put the Russians firmly in command before Mohamed Salah, who had a subdued game on his return from injury, struck from a penalty, awarded after a video review.
Should Uruguay beat Saudi Arabia on Wednesday it will ensure the South Americans and the Russians go through to the round of 16 with a game to spare. A draw will also send the hosts through.
Salah was out of form for the Egyptians, and coach Hector Cuper admits his job is at risk after a disappointing tournament.
"Whether I should stay or not does not depend on me and we still have another match. In a World Cup you have to wait till the very last minute although our chances are minute," he said.
Meanwhile, a red card has been shown for the first time at this tournament, with Colombia's Carlos Sanchez dismissed after just three minutes in his team's 2-1 loss to Japan.
His sending-off in the third minute, for a deliberate handball, was the second-fastest in World Cup history.
Uruguay's Jose Batista was dismissed after 55 seconds against Scotland in 1986.
Shinji Kagawa scored from the resulting penalty to give Japan the lead in the Group H match.
Juan Quintero's clever low free kick in the 39th minute gave Colombia the equaliser but Yuya Osako headed a corner into the net for Japan's 73rd minute winner.
"To lose one player in the three minutes to lose such a crucial player, is not an easy thing," Colombia's coach Jose Pekerman said.
"It's unfortunate for the people of Colombia who came here with high hopes. This is obviously going to leave us with a bitter memory."
The win was sweet revenge for Japan, who were thumped 4-1 by the same opponents in Brazil 2014.
Senegal became the first African team to win a World Cup match here in Russia when they beat Poland 2-1, helped by an own goal from Brazilian-born Polish defender Thiago Cionek and a nightmare moment for goalkeeper Wojciech Szczesny.
Cionek stuck out a leg and deflected Idrissa Gueye's wayward shot into the net to give Senegal the lead in the 37th minute.
The second goal was even more of a gift for Senegal, when Szczesny rushed out of his area to try and intercept a ball passed back to him but M'Baye Niang got to the ball first, slipped it past him and scored into an empty net.
Niang, who at 23 has already played for Caen, AC Milan, Montpellier, Genoa, Watford and Torino, said: "I saw a ball coming back from the Polish defence. I felt there was something on and was able to get in there and score."