Lionel Messi and Argentina on one side. Lamine Yamal and Spain on the other.

The World Cup final is finally underway.

Kickoff was shortly past 3 p.m. EDT at MetLife Stadium. Argentina is seeking its fourth title, Spain its second — and could become the first nation to simultaneously hold the World Cup crowns in both men's and women's soccer.

Argentina made three changes from its starting 11 for the semifinal win over England: Midfielders Rodrigo De Paul and Nico Gonzalez, along with defender Gonzalo Montiel were in, while midfielders Leandro Paredes and Nahuel Molina, along with forward Giuliano Simeone, were dropped.

Spain kept its starting 11 from the semifinal win over France untouched.

It was the 104th and last match of the biggest World Cup ever, a 48-team event that played out over the U.S., Canada and Mexico. Because there were more matches than any previous World Cup, it was no surprise that there were more goals than all other editions — 307 and counting entering Sunday.

If Argentina and Spain combine for at least two goals in the final, this World Cup will also have the highest average number of goals per game since the 1956 event saw 3.6 per contest. (If the teams score fewer than two Sunday, it'll still be the highest average per game since 1970's World Cup saw 2.97 goals per game.)

The spectacle will not be limited to simply soccer.

Post Malone headlined the closing ceremony, which started about 90 minutes before the final was set to begin and just a few minutes after Messi and Argentina arrived at the stadium. The halftime show — a first for FIFA — has Justin Bieber, Madonna, Shakira and BTS as fellow headliners, along with Burna Boy, Venezuelan conductor Gustavo Dudamel, the PS 22 Chorus featuring Coldplay, and even characters from Sesame Street and the Muppets.

President Donald Trump was present as well, with plans calling for him to be part of the trophy presentation at the conclusion of the match.

“I won't pick sides,” Trump told Fox Sports in an interview released Sunday afternoon before the final. “I just think it's very hard to bet against Messi. He's great.”

Argentina was wearing its light blue and white vertically striped jerseys for the match, while Spain was wearing predominantly red with navy sleeves. The officiating crew was from Slovenia — Slavko Vinčić is the referee, with Tomaž Klančnik and Andraž Kovačič his assistant referees.