 He pitched in four games and went 1–0.After being released by Almendares, Marrero signed with the Tigres de Marianao for the 1956–1957 season, where he pitched 19 innings in seven games with a 1.37 ERA.Marianao won the pennant and Marrero pitched in his last Caribbean Series, lasting 3 innings against Panamá in a game that was eventually won by his teammate, Jim Bunning.