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Lost World Series (4-3) to New York Yankees |

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Transactions listed are from November 1 of previous year to April 1 of the following year.
October 15, 1957
Sold Dave Jolly to the San Francisco Giants.
November 16, 1957
Traded Leonard Williams (minors), Ben Johnson, Chick King and cash to the Chicago Cubs. Received Casey Wise.
December 2, 1957
Bobby Malkmus drafted by the Washington Senators in the 1957 rule 5 draft.
December 5, 1957
Traded Taylor Phillips and Sammy Taylor to the Chicago Cubs. Received Eddie Haas, Don Kaiser and Bob Rush.
1958
Obtained Cecil Butler from Atlanta (Southern Association) as part of a minor league working agreement.
Chuck Estrada sent to the Baltimore Orioles in an unknown transaction.
Signed Bob Hendley as an amateur free agent.
Signed Rick Herrscher as an amateur free agent.
Manny Jimenez received from Ciudad Juarez (Mexican) in an unknown transaction.
Signed Mack Jones as an amateur free agent.
Hector Martinez sent to the Cleveland Indians in an unknown transaction.
Released Chet Nichols.
Signed Amado Samuel as an amateur free agent.
March 30, 1958
Purchased Dick Littlefield from the Chicago Cubs.
April 19, 1958 (Standings)
Phil Paine selected by the St. Louis Cardinals off waivers.
May 23, 1958 (Standings)
Signed Tony Cloninger as an amateur free agent.
May 24, 1958 (Standings)
Sold Bob Hazle to the Detroit Tigers.
May 27, 1958 (Standings)
Signed Denis Menke as an amateur free agent.
May 28, 1958 (Standings)
Signed Tommie Aaron as an amateur free agent.
June 13, 1958 (Standings)
Traded Carl Sawatski to the Philadelphia Phillies. Received Joe Lonnett.
June 16, 1958 (Standings)
Signed Denny Lemaster as an amateur free agent.
June 18, 1958 (Standings)
Signed Larry Maxie as an amateur free agent.
July 19, 1958 (Standings)
Signed Phil Niekro as an amateur free agent.
December 1, 1958
Drafted Jim Pisoni from the New York Yankees in the 1958 rule 5 draft.
Claude Raymond drafted by the Chicago White Sox in the 1958 rule 5 draft.
December 23, 1958
Released Ernie Johnson.
1959
Signed Luis Alcaraz as an amateur free agent.
Cuno Barragan received from the Chicago Cubs in an unknown transaction.
Signed Bruce Brubaker as an amateur free agent.
Obtained Clay Dalrymple from Sacramento (PCL) as part of a minor league working agreement.
Signed Dave Eilers as an amateur free agent.
Signed Hank Fischer as an amateur free agent.
Signed Vern Handrahan as an amateur free agent.
Obtained Al Heist from Sacramento (PCL) as part of a minor league working agreement.
Signed Ellie Hendricks as an amateur free agent.
Signed Ron Hunt as an amateur free agent.
Signed Dick Kelley as an amateur free agent.
Traded Jim Umbricht to the Pittsburgh Pirates. Received Emil Panko (minors).
March 31, 1959
Traded Gene Conley, Harry Hanebrink and Joe Koppe to the Philadelphia Phillies. Received Ted Kazanski, Stan Lopata and Johnny O'Brien.