Teams involved: Boston Red Sox, Seattle Mariners
Trade: Jason Varitek and Derek Lowe to the Red Sox, Heathcliff Slocumb to the Mariners
Bottom line:The Mariners thought they were just a closer away from making a pennant push in 1997, so they traded for journeyman reliever Heathcliff Slocumb. In return, Seattle gave up two young prospects, Jason Varitek and Derek Lowe.
Seattle never imagined, and Boston maybe didn’t either, that those two players would become key pieces to the Red Sox' World Series runs. Varitek became just the fourth captain in Red Sox history on his way to winning two rings and making three All-Star games. Lowe threw a no-hitter for the Red Sox, made two All-Star teams and won a game for the team in the 2004 World Series.
Meanwhile, Slocumb struggled in Seattle and got bumped from the closer role to a middle reliever. He pitched just one-and-a-half years for the Mariners, posted a 2-9 record and had a 4.97 ERA.