No. 31: Rick Aguilera (15.5 WAR)
Rick Aguilera may have started his career in a Twins uniform as a starter, but he is widely-known as one of the best relievers in team history. Aguilera spent ten and a half seasons with the Twins during his two stints from 1989 to 1995 and again from 1996 to 1999.
He would spend only half a season away from the team in the period from 1989 to 1999, when he was trade to the Red Sox during the 1995 season. He would convert his first save for Boston against the Twins at the Metrodome.
During his time in Minnesota, Aguilera would convert a then-team record 254 saves. His total now ranks second in team history. He made three straight All-Star teams from 1991 to 1993, even garnering MVP votes in 1991.
Aguilera was the closer for the World Series champion Twins team of 1991, a year he converted a career-high 42 saves and had an ERA of 2.35. He put up his career-high WAR in both 1991 and 1993, which was 2.4.
His time in Minnesota was unforgettable. So much, that he was enshrined in the Minnesota Twins Hall of Fame as part of the Class of 2008. He even received a few National Baseball Hall of Fame votes during the only year he was on the ballot in 2006. Aguilera was a great closer for the Twins, and his dependability and value put him on this list.