| Saturday, September 27th, 1980 | Activated CL Carlos Salazar from the disabled list. | Tuesday, September 16th, 1980 | Placed CF Paul Calvino on the 9-day disabled list. | Saturday, August 16th, 1980 | Placed MR Kumanosuke Ageda on the 60-day disabled list. | Monday, August 11th, 1980 | Assigned RF Oscar Bush to Triple A Peterborough. | Signed Brett Davis to a minor league contract with a signing bonus of $23,200. | Signed Kent Erickson to a minor league contract with a signing bonus of $281,000. | Thursday, August 7th, 1980 | Signed Robert Sherman to a minor league contract with a signing bonus of $236,800. | Sunday, August 3rd, 1980 | RF Oscar Bush was designated for assignment, placed on waivers and taken off the 40-man roster. | Thursday, July 17th, 1980 | Signed Robert Clark to a minor league contract with a signing bonus of $65,600. | Tuesday, July 8th, 1980 | Signed Arnold Williams to a minor league contract with a signing bonus of $17,100. | Monday, June 2nd, 1980 | Placed 3B José Carbezola on the 60-day disabled list. | Monday, April 21st, 1980 | Placed LF Augusto Fuentes on the 60-day disabled list. | Monday, April 7th, 1980 | Activated RF Loren Gwyther from the disabled list. | Thursday, March 27th, 1980 | Placed MR Raúl García on the 9-day disabled list. | Sunday, March 23rd, 1980 | Placed RF Loren Gwyther on the 9-day disabled list. | Saturday, March 22nd, 1980 | Placed MR Kumanosuke Ageda on the 9-day disabled list. | Wednesday, October 10th, 1979 | Signed scouting director Vicente Maldonado to a 5-year, $61,700 per year contract. | |
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