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Transactions listed are from November 1 of previous year to April 1 of the following year.
October 15, 1957
Traded Jack Dittmer to the San Francisco Giants. Received Wayne Terwilliger.
November 20, 1957
Traded a player to be named later, Kent Hadley, Frank House, Duke Maas, Jim Small, John Tsitouris and Bill Tuttle to the Kansas City Athletics. Received Billy Martin, Mickey McDermott, Tom Morgan, Lou Skizas, Tim Thompson and Gus Zernial. The Detroit Tigers sent Jim McManus (April 3, 1958) to the Kansas City Athletics to complete the trade.
December 2, 1957
Drafted Hy Cohen from the Chicago Cubs in the 1957 minor league draft.
Walt Streuli selected by the Los Angeles Dodgers in the 1957 minor league draft.
December 11, 1957
Sold Dave Philley to the Philadelphia Phillies.
December 12, 1957
Purchased Jim Delsing from the Chicago White Sox.
Purchased George Spencer from the Chicago White Sox.
1958
Signed Dick Egan as an amateur free agent.
Signed Chico Fernandez as an amateur free agent.
Signed Larry Foster as an amateur free agent.
Signed Doug Gallagher as an amateur free agent.
Signed Bob Humphreys as an amateur free agent.
Signed Ron Nischwitz as an amateur free agent.
Signed George Smith as a free agent.
Signed Don Wert as an amateur free agent.
January 28, 1958
Traded Jim Finigan and $25,000 to the San Francisco Giants. Received Gail Harris and Ozzie Virgil.
February 18, 1958
Traded Jay Porter and Hal Woodeshick to the Cleveland Indians. Received Hank Aguirre and Jim Hegan.
March 27, 1958
Traded Pete Wojey and $20,000 to the Cleveland Indians. Received Milt Bolling and Vito Valentinetti.
April 3, 1958 (Standings)
Purchased Stan Palys from the Cincinnati Redlegs.
April 10, 1958 (Standings)
Purchased Jim Fridley from the Los Angeles Dodgers. (Date given is approximate. Exact date is uncertain.)
April 11, 1958 (Standings)
Sold Jim Fridley to the Cincinnati Redlegs. (Date given is approximate. Exact date is uncertain.)
April 14, 1958 (Standings)
Signed Art Houtteman as a free agent.
May 9, 1958 (Standings)
Purchased Herm Wehmeier from the St. Louis Cardinals.
May 12, 1958 (Standings)
Selected George Susce off waivers from the Boston Red Sox.
May 24, 1958 (Standings)
Purchased Bob Hazle from the Milwaukee Braves.
May 26, 1958 (Standings)
Traded Ben Mateosky (minors) to the St. Louis Cardinals. Received Barney Schultz.
June 2, 1958 (Standings)
Sold Lou Sleater to the Baltimore Orioles.
June 15, 1958 (Standings)
Traded Ray Boone and Bob Shaw to the Chicago White Sox. Received Bill Fischer and Tito Francona.
June 23, 1958 (Standings)
Traded Vito Valentinetti to the Washington Senators. Received Al Cicotte.
June 30, 1958 (Standings)
Signed Mickey Lolich as an amateur free agent.
July 27, 1958 (Standings)
Traded Jim Hegan to the Philadelphia Phillies. Received John Turk (minors) and cash.
September 11, 1958 (Standings)
Bill Fischer selected by the Washington Senators off waivers.
October 5, 1958 (Standings)
Purchased Pete Burnside from the San Francisco Giants.
October 13, 1958 (Standings)
Received Maury Wills from the Los Angeles Dodgers as part of a conditional deal.
November 20, 1958
Traded Al Cicotte and Billy Martin to the Cleveland Indians. Received Ossie Alvarez, Don Mossi and Ray Narleski.
December 1, 1958
Lou Skizas drafted by the Chicago White Sox in the 1958 rule 5 draft.
Wayne Terwilliger drafted by the Kansas City Athletics in the 1958 rule 5 draft.
December 2, 1958
Traded Herb Moford to the Boston Red Sox. Received Lou Berberet.
December 6, 1958
Traded Reno Bertoia, Jim Delsing and Ron Samford to the Washington Senators. Received Rocky Bridges, Neil Chrisley and Eddie Yost.
1959
Signed Pat Dobson as an amateur free agent.
Signed Paul Doyle as an amateur free agent.
Signed Purnal Goldy as an amateur free agent.
Signed Andy Kosco as an amateur free agent.
Signed Johnny Lewis as an amateur free agent.
Signed John Sullivan as an amateur free agent.
March 21, 1959
Traded Tito Francona to the Cleveland Indians. Received Larry Doby.