Merloni hit a home run in his first major-league at bat in Fenway Park, a three-run home run off of
José Rosado on May 15, 1998. While with Boston, his frequent reassignments between the Red Sox and their Triple-A affiliate
Pawtucket Red Sox caused local sportswriters to coin the term "
Merloni Shuttle" to refer to Boston's transfer of players between the clubs. Merloni became popular with Boston fans for his local roots and reliable
pinch hitting. Merloni hit .294 for his career as a pinch hitter. He played part of the 2000 season with
Yokohama BayStars of Japan's
NPB, before returning to the United States with the Red Sox in July. He remained with the Red Sox through the 2002 season. He was placed on waivers by the Red Sox at the end of Spring Training in 2003, and was claimed by the
San Diego Padres. The Padres traded him back to the Red Sox in August 2003. Merloni would sign with the
Cleveland Indians ahead of the
2004 season, He signed a minor league contract to return to the Indians for the
2006 season. He appeared in nine games for the Indians during that season, which would be the final nine games of his major league career. Ahead of the
2007 season, Merloni signed a minor league contract with the
Oakland Athletics. He spent the season with Oakland's
Triple-A affiliate, the
Sacramento River Cats. Merloni was chosen as the
Most Valuable Player in the 2007
Bricktown Showdown, leading the River Cats over the
Richmond Braves by a final score of 7–1. Merloni contributed a
home run and four
RBI in the game. Before the game, Merloni had been chosen as the River Cats' team captain. He was also voted Best Defensive Player and Best Teammate for the 2007 season. ==Broadcast career==