It’s a sweep.

After Japan and Senegal won their respective 2018 World Cup matches Tuesday, their fans stayed behind to clean up the stadiums.

Photos and videos posted on social media showed Samurai Blue fans — some draped in Japanese flags — picking up rubbish left behind in the stands after their 2-1 win over Colombia.

“This is my favorite moment of the World Cup so far, Japan fans picking up litter after their victory vs Columbia,” tweeted Christopher McKaig.

One video showed hordes of fans in blue jerseys throwing trash into garbage bags.

The country also made headlines for fans’ tidiness at the 2014 World Cup in Brazil.

Later in the day, Senegal fans were spotted picking up empty bottles and plastic snack containers after their 2-1 win over Poland.

“This shouldn’t be ignored. I know for a fact I wouldn’t stay to clean up,” wrote @Fulhamflutter.

The two countries left the 15,000 volunteers working on the tournament in Russia with a little less work to do.

Japan and Senegal will be facing off on June 24.