Hamelin won the 1994 AL Rookie of the Year Award as a member of the Kansas City Royals, when he posted a .282 batting average and hit 24 home runs (earning him the nickname "the hammer") with 65 RBIs during the strike-shortened season.
After the major leagues
Hamelin abruptly quit his professional baseball career while playing in the minor leagues for the Toledo Mud Hens (Detroit Tigers AAA Team) in 1999. After grounding out, he went back to the dugout and told manager Gene Roof, "I'm done", ending his professional baseball career as a player.[1]
After retirement Hamelin was out of professional baseball for several years, owning a manufacturing company.[5] He attended scouting school and returned to professional baseball as a scout for the Washington Nationals and the Toronto Blue Jays.[6] In 2012, he joined the Major League scouting corps of the Boston Red Sox.[7] His scouting contract was not renewed by the Boston Red Sox for the 2021 season.[8]
Hamelin's 1996 Pinnacle Foilbaseball card is commonly referred to as the worst baseball card of all time.[9] In 2019, Hamelin and a collection of his baseball cards were featured in the first episode of SB Nation's two part series "The Bob Emergency", narrated by Jon Bois.[10]