| | | Wednesday, September 24th, 1958 | | Activated RF Máximo Mendoza from the 60-day disabled list. | | Saturday, September 6th, 1958 | | Placed SS Jerry Powell on waivers. | | Friday, September 5th, 1958 | | Activated C Alonso Cruz from the disabled list. | | Sunday, August 10th, 1958 | | Signed Robert Hammond to a minor league contract with a signing bonus of $16,500. | | Placed RF Jason Burns on waivers. | | Thursday, August 7th, 1958 | | Placed RF Jason Burns on waivers. | | Wednesday, August 6th, 1958 | | Signed Ken White to a minor league contract with a signing bonus of $57,400. | | Sunday, August 3rd, 1958 | | Signed Ben Delaney to a minor league contract with a signing bonus of $17,300. | | Saturday, August 2nd, 1958 | | Signed Josh Heath to a minor league contract with a signing bonus of $2,500. | | Wednesday, July 30th, 1958 | | Activated CF Ian Turina from the disabled list. | | Placed RF Vincente Ibarra on the 15-day disabled list. | | Friday, July 11th, 1958 | | Placed SP Tony Aguilar on the 60-day disabled list. | | Sunday, June 22nd, 1958 | | Signed Lorenzo Contreras to a minor league contract with a signing bonus of $9,600. | | Friday, June 20th, 1958 | | Signed Ray McKnight to a minor league contract with a signing bonus of $4,100. | | Friday, June 6th, 1958 | | Activated SS Mike Fox from the disabled list. | | 3B Steve Morrow was designated for assignment and placed on waivers (from active). | | Friday, April 4th, 1958 | | Placed RF Hidekazu Gato on the 15-day disabled list. | |
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