re: Most underrated MLB players of all time

Rod Beck.

In 1993 he recorded 48 saves, including 24 consecutive. At the time, both marks were Giants franchise records.

After the 1997 season, the Giants felt Beck's best years were behind him, and allowed him to leave as a free agent to sign with the Chicago Cubs, replacing him with Robb Nen. Beck set a career high in saves in 1998, his first season with the Cubs, converting 51 of 58 chances.

In 2003, Beck returned to the Major Leagues with the Padres, filling in for the injured Trevor Hoffman. He converted 20 saves in 20 chances, while posting a 1.78 ERA. His statistics earned him the National League Comeback Player of the Year award.