| Thursday, December 11th , 1958 |
| New York Gothams: Signed free agent RP George Clark to a minor league contract. |
| New York Gothams: Signed free agent RP Frank Wilson to a minor league contract. |
| St. Louis Pioneers: SP Gus McCombs was added to the secondary (40-man) roster. |
| St. Louis Pioneers: C Frank Wood was designated for assignment, placed on waivers and taken off the secondary (40-man) roster. |
| Boston Minutemen: 1B George Bernard was designated for assignment, placed on waivers and taken off the secondary (40-man) roster. |
| Boston Minutemen: RP Charley Griffin was designated for assignment, placed on waivers and taken off the secondary (40-man) roster. |
| Chicago Cougars: SS Bob Decker was added to the secondary (40-man) roster. |
| Chicago Chiefs: 3B Charlie Ellis was added to the secondary (40-man) roster. |
| Chicago Cougars: 2B Jack Betts was designated for assignment, placed on waivers and taken off the secondary (40-man) roster. |
| Chicago Chiefs: SP Dan Charlton was added to the secondary (40-man) roster. |
| Chicago Chiefs: SS John Moreland was added to the secondary (40-man) roster. |
| Chicago Cougars: RP Carl Potter was designated for assignment, placed on waivers and taken off the secondary (40-man) roster. |
| Boston Minutemen: Released RP Hughie Foster. |
| Chicago Cougars: Released RP Bill Shepherd. |
| Chicago Cougars: Released RF Del Peters. |
| Montreal Saints: SP Chuck Droste was added to the secondary (40-man) roster. |
| Philadelphia Keystones: SS Sam Gallick was designated for assignment, placed on waivers and taken off the secondary (40-man) roster. |
| Cincinnati Cannons: CF Bonnie Chapin was added to the secondary (40-man) roster. |
| Cincinnati Cannons: RF Sam Sheppard was added to the secondary (40-man) roster. |
| Cincinnati Cannons: 2B John Power was added to the secondary (40-man) roster. |
| Cincinnati Cannons: RP Alex Hafer was designated for assignment, placed on waivers and taken off the secondary (40-man) roster. |
| Cincinnati Cannons: RP Red Cunningham was designated for assignment, placed on waivers and taken off the secondary (40-man) roster. |
| Cincinnati Cannons: RP Bob J. Martin was designated for assignment, placed on waivers and taken off the secondary (40-man) roster. |
| Cincinnati Cannons: 1B Milo Ross was designated for assignment, placed on waivers and taken off the secondary (40-man) roster. |
| Cincinnati Cannons: CF Lee Rabinowitz was added to the secondary (40-man) roster. |
| San Francisco Sailors: LF Bill DeLong was added to the secondary (40-man) roster. |
| San Francisco Sailors: 1B Reuben Walker was added to the secondary (40-man) roster. |
| Pittsburgh Miners: SP Jimmy Blair was added to the secondary (40-man) roster. |
| Pittsburgh Miners: 3B Harry Woodruff was designated for assignment, placed on waivers and taken off the secondary (40-man) roster. |
| Washington Eagles: C Bill Smith was added to the secondary (40-man) roster. |
| Washington Eagles: RF Jim Roberts was added to the secondary (40-man) roster. |
| Washington Eagles: SP Pat Andrews was designated for assignment, placed on waivers and taken off the secondary (40-man) roster. |
| New York Gothams: LF Pete Bates was added to the secondary (40-man) roster. |
| Los Angeles Stars: LF Charlie Sax was added to the secondary (40-man) roster. |
| Los Angeles Stars: 3B Armand Franco was designated for assignment, placed on waivers and taken off the secondary (40-man) roster. |
| Cleveland Foresters: LF Chick Reed was added to the secondary (40-man) roster. |
| Cleveland Foresters: SP Hank Cook was added to the secondary (40-man) roster. |
| Los Angeles Stars: RP Tony Bonelli was designated for assignment, placed on waivers and taken off the secondary (40-man) roster. |
| Cleveland Foresters: RP Mort Martin was designated for assignment, placed on waivers and taken off the secondary (40-man) roster. |
| Los Angeles Stars: 1B Bill Wall was designated for assignment, placed on waivers and taken off the secondary (40-man) roster. |
| Los Angeles Stars: 1B Bob Zeltser was designated for assignment, placed on waivers and taken off the secondary (40-man) roster. |
| Toronto Wolves: SP Phil Colantuono was added to the secondary (40-man) roster. |
| Toronto Wolves: 2B Gus Koval was added to the secondary (40-man) roster. |
| Philadelphia Keystones: RP Nelson Galletta was designated for assignment and placed on waivers. |
| Washington Eagles: Lost RP Jack Kessler in the Rule 5 Draft to the Philadelphia Keystones. |
| Philadelphia Keystones: Drafted RP Jack Kessler in the 1958 Rule 5 Draft (Round 1, Pick 1, 1st overall Pick) from the Washington Eagles. |
| Cincinnati Cannons: RP Dick Greenhalgh was designated for assignment and placed on waivers. |
| Pittsburgh Miners: Lost SP Eddie Whitney in the Rule 5 Draft to the Cincinnati Cannons. |
| Cincinnati Cannons: Drafted SP Eddie Whitney in the 1958 Rule 5 Draft (Round 1, Pick 4, 4th overall Pick) from the Pittsburgh Miners. |
| San Francisco Sailors: RP Mike Quigley was designated for assignment and placed on waivers. |
| Washington Eagles: Lost SP Larry Knez in the Rule 5 Draft to the San Francisco Sailors. |
| San Francisco Sailors: Drafted RP Larry Knez in the 1958 Rule 5 Draft (Round 1, Pick 5, 5th overall Pick) from the Washington Eagles. |
| Washington Eagles: Lost CF Dave Price in the Rule 5 Draft to the Chicago Chiefs. |
| Chicago Chiefs: Drafted CF Dave Price in the 1958 Rule 5 Draft (Round 1, Pick 11, 11th overall Pick) from the Washington Eagles. |
| Boston Minutemen: RP Jack Thomas was designated for assignment and placed on waivers. |
| Chicago Chiefs: Lost 2B Ed Wise in the Rule 5 Draft to the Boston Minutemen. |
| Boston Minutemen: Drafted 3B Ed Wise in the 1958 Rule 5 Draft (Round 1, Pick 12, 12th overall Pick) from the Chicago Chiefs. |
| Detroit Dynamos: RP Ed Hillston was designated for assignment and placed on waivers. |
| Boston Minutemen: Lost 2B Bob Laun in the Rule 5 Draft to the Detroit Dynamos. |
| Detroit Dynamos: Drafted 2B Bob Laun in the 1958 Rule 5 Draft (Round 1, Pick 16, 16th overall Pick) from the Boston Minutemen. |
