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.

Mets lefthander David Peterson turned in a quality start, allowing two runs in six innings. Otto Lopez homered in the first and Eric Wagaman went deep in the sixth. Peterson struck out nine and scattered three walks and five hits, benefitting in particular from a double-play ground ball in the fourth.

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