The final game of Pool D of the World Baseball Classic between Puerto Rico and the Dominican Republic had a Game 7 feel to it at loanDepot Park in Miami, Florida. But nothing that happened in the game will matter to Mets fans more than what happened directly afterwards. After striking out the side in the bottom of the ninth for Puerto Rico, Mets closer Edwin Díaz appeared to suffer a severe leg injury during the team’s celebration.

Díaz went down holding his right knee, and he had to be helped off the field using a wheelchair.

Díaz is undergoing X-rays, according to SNY’s Andy Martino, and both the Mets and team Puerto Rico are anxiously awaiting the results.

Díaz’s injury put a sour note on what was otherwise a tremendous game. Led by Francisco Lindor , Puerto Rico advanced to the quarterfinals with a 5-2 victory, eliminating a Dominican Republican team that was many people’s pick to win the entire tournament.

Lindor, the captain of the team, had one of the best moments of the tournament so far. In the top of the fifth, Lindor hit a ball to center that Julio Rodríguez misplayed, allowing it to roll all the way to the wall in dead center. The single and three-base error by Rodriguez allowed the Mets shortstop to circle all the bases and give Puerto Rico a 5-1 lead.

Overall, Lindor was 2-for-4 on the day and also added an RBI single in the top of the third against Bryan Abreu that was a part of a four-run inning by Puerto Rico. For the tournament, Lindor is hitting .467 with five RBIs in four games.

The scoring for Puerto Rico began when Christian Vázquez  hit a solo home run off Johnny Cueto in the third. Later in the inning, after the Lindor single, Enrique Hernández made it 3-0 with an RBI single of his own. The lead would eventually go to 4-0 on an RBI groundout by MJ Melendez.

While the Dominican Republic offense did get a tape measure home run by Juan Soto in the bottom of the third (1-for-2, 2 walks), they were unable to put much else on the board. For the game, the Dominican Republic was 2-for-8 with men in scoring position, and they struck out 11 times against eight different Puerto Rico pitchers.

The loss by the Dominican Republic means they will fail to qualify for the quarterfinals in the WBC for the first time since 2009.

Meanwhile, Lindor and Puerto Rico will advance to play in the quarterfinals against Mexico, who clinched Pool C earlier today with a win over Canada. It is the fifth straight tournament that Puerto Rico has qualified for the quarterfinals. The Puerto Rican team will certainly be playing the rest of the tournament with heavy hearts after the injury to their closer.