| Date |
Transaction Information |
| 1958 |
Signed Bob Burda as an amateur free agent. |
| 1958 |
Signed Bob Sadowski as an amateur free agent. |
| 1958 |
Signed Ray Sadecki as an amateur free agent. |
| 1958 |
Signed Jim Beauchamp as an amateur free agent. |
| 1958 |
Signed Dick Hughes as an amateur free agent. |
| 1958 |
Signed Chris Krug as an amateur free agent. |
| 1958 |
Received Ed Olivares from Philadelphia Phillies (NL). |
| 1958 |
Signed Charlie James as an amateur free agent. |
| 1958 |
Signed Mike Shannon as an amateur free agent. |
| Apr 02, 1958 |
Traded Jim King to San Francisco Giants (NL) in exchange for Ray Katt. |
| Apr 19, 1958 |
Claimed Phil Paine from Milwaukee Braves (NL) off waivers. |
| May 09, 1958 |
Sold Herm Wehmeier to Detroit Tigers (AL). |
| May 20, 1958 |
Traded Alvin Dark to Chicago Cubs (NL) in exchange for Jim Brosnan. |
| May 21, 1958 |
Signed Bill Wight as a free agent. |
| May 21, 1958 |
Signed Roy Smalley as a free agent. |
| May 26, 1958 |
Traded Barney Schultz to Detroit Tigers (AL) in exchange for Ben Mateosky. |
| Jun 14, 1958 |
Purchased Sal Maglie from New York Yankees (AL). |
| Jun 15, 1958 |
Traded Cash and Dick Schofield to Pittsburgh Pirates (NL) in exchange for Gene Freese and Johnny O'Brien. |
| Jul 02, 1958 |
Lost Morrie Martin to Cleveland Indians (AL) off waivers. |
| Jul 09, 1958 |
Claimed Chuck Stobbs from Washington Senators (AL) off waivers. |
| Jul 25, 1958 |
Lost Joe Taylor to Baltimore Orioles (AL) off waivers. |
| Sep 29, 1958 |
Traded Gene Freese to Philadelphia Phillies (NL) in exchange for Solly Hemus. |
| Oct 03, 1958 |
Traded Del Ennis, Eddie Kasko and Bob Mabe to Cincinnati Redlegs (NL) in exchange for George Crowe, Alex Grammas and Alex Kellner. |
| Oct 08, 1958 |
Traded Hobie Landrith, Billy Muffett and Benny Valenzuela to San Francisco Giants (NL) in exchange for Ernie Broglio and Marv Grissom. |
| Oct 15, 1958 |
Purchased Marshall Bridges from Sacramento (PCL). |
| Oct 17, 1958 |
Released Solly Hemus. |
| Oct 17, 1958 |
Released Bill Wight. |
| Nov 19, 1958 |
Released Ray Katt. |
| ~Dec 1958 |
Sold Pidge Browne to Houston (American Association). |
| Dec 01, 1958 |
Lost Johnny O'Brien to Philadelphia Phillies (NL) in the Rule 5 major league draft. |
| Dec 01, 1958 |
Selected Joe Durham from Baltimore Orioles (AL) in the Rule 5 major league draft. |
| Dec 03, 1958 |
Traded Ruben Amaro to Philadelphia Phillies (NL) in exchange for Chuck Essegian. |
| Dec 04, 1958 |
Traded Wally Moon and Phil Paine to Los Angeles Dodgers (NL) in exchange for Gino Cimoli. |
