| Monday, August 18th, 1980 | Placed SS Manuel Zúńiga on the 15-day disabled list. | Friday, July 4th, 1980 | Activated C Stephen Murray from the disabled list. | Friday, June 27th, 1980 | Activated MR Francisco Gómez from the disabled list. | Sunday, June 15th, 1980 | Drafted CF Josh Hicks in the 1980 first-year player draft (Round 6, Pick 18, 122nd overall pick). | Drafted SP Billy MacKnight in the 1980 first-year player draft (Round 7, Pick 18, 143rd overall pick). | Drafted 2B Robinson Pelayo in the 1980 first-year player draft (Round 8, Pick 18, 163rd overall pick). | Drafted CL Cirillo Servergnini in the 1980 first-year player draft (Round 9, Pick 18, 183rd overall pick). | Drafted C Bill Olsen in the 1980 first-year player draft (Round 10, Pick 18, 203rd overall pick). | Saturday, June 14th, 1980 | Placed C Stephen Murray on the 15-day disabled list. | Friday, May 30th, 1980 | Activated 1B Ed Peoples from the disabled list. | Friday, May 16th, 1980 | Placed CF Mark Ingram on the 15-day disabled list. | Sunday, May 4th, 1980 | Placed SP Dan Kennedy Jr. on the 15-day disabled list. | Monday, April 28th, 1980 | Placed 1B Ed Peoples on the 15-day disabled list. | Monday, April 14th, 1980 | Released SP Alan Reid. | |
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