A career minor leaguer left-handed pitcher Tim Hamulack was signed by the Mets as a free agent on January 14, 2005. He spent the 2005 season in the minors before getting the call to join the Mets as a September callup. On September 2, he made his Major League debut, pitching 1/3 inning in the Mets 4-2 loss to the Florida Marlins. Hamulack made five more relief appearances pitching a total 2 1/3 innings, he posted a 23.14 ERA and failed to earn a decision.
Following the season, he was traded by the Mets to the Los Angeles Dodgers along with Jae Seo in exchange for Duaner Sanchez and Steve Schmoll.
While with the Mets Hamulack wore number 46.
Tim Hamulack also played for the Los Angeles Dodgers in 2006.