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.

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.

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