Alonso’s grand slam was one of four homers hit by the Mets in a 10-4 demolition of the Marlins at loanDepot park. After three frustrating offensive games in Houston, where they managed only five runs total and lost twice, the Mets jumped all over right-hander Cal Quantrill in the fifth inning and coasted.

In the Mets’ fourth game of the season, Pete Alonso broke out of a mini slump by cracking a grand slam that helped blow Monday’s game wide open en route to a 10-4 win over the Miami Marlins.

After re-signing with New York, Alonso worked on his swing over the winter. He “actually learned how to hit,” coach Eric Chavez said.

Pete Alonso crushes a 3-run homer to tie the game for the Mets in the top of the eighth inning vs. the Marlins.

Jesse Winker drew a bases-loaded walk to force home the go-ahead run in the 11th inning Wednesday for the visiting New York Mets, who overcame a late three-run deficit to earn a 6-5 win over the Miami Marlins in the rubber game of a three-game series.

The Mets escaped with a series victory and 3-3 record in the first week of the season. They will host the Blue Jays in Friday's home opener.