Pete Alonso hit a grand slam and the New York Mets beat the Miami Marlins 10-4. Starling Marte, Luis Torrens and Brandon Nimmo also went deep for the Mets, who finished with 11 hits in the opener of a three-game series.

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.

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

The Miami Marlins scored a walk-off victory against the Pittsburgh Pirates on Sunday (box score), in the process becoming the first MLB team in more than two decades to record their first three victories via walk-offs.