Generally utilized as a backup catcher, Marzano was a member of division champions with the 1988 and 1990 Red Sox, and the 1997 Mariners, for whom he posted a .287 batting average.

Born in Philadelphia, Pennsylvania, Marzano graduated from its Central High School, and briefly attended Holy Family College, studying radiologic technology.

Marzano finished his career as the all-time Temple University leader in batting average, slugging percentage, and home runs.

As a reserve catcher with the Mariners in 1996, Marzano became a cult hero in Seattle when he threw a haymaker at New York Yankees outfielder Paul O'Neill during a game in the Kingdome on Wednesday, August 28.

[3] It occurred after O'Neill complained to home plate umpire Rocky Roe about a pitch from reliever Tim Davis was high and inside; the ensuing brawl in the eighth inning resulted in six ejections, including Marzano.