Ex-MLB player Pedro Feliciano -- who pitched for the New York Mets for 9 seasons -- died on Sunday night, baseball analyst Eduardo Perez reported.
He was just 45 years old.
Perez did not reveal a cause of death for Feliciano ... but the ESPN broadcaster did say the former reliever passed away in his sleep.
"He was a really good [baseball player] but a better person off the field," Perez said. "He will be missed."
Perez added Feliciano had been out jet skiing with his family earlier Sunday.