| | | Tuesday, September 9th, 1980 | | Activated SP Matt Jones from the disabled list. | | Monday, August 11th, 1980 | | Signed Esteban Pérez to a minor league contract with a signing bonus of $22,300. | | Tuesday, August 5th, 1980 | | Activated CF Domingo López from the 60-day disabled list. | | RF Pedro Coronado was designated for assignment and placed on waivers (from active). | | Friday, August 1st, 1980 | | Activated CF Ralph Compton from the disabled list. | | LF Lévy Gauthier was designated for assignment and placed on waivers (from active). | | Thursday, July 24th, 1980 | | Signed 1st round draft pick Miguel López for a signing bonus of $158,500 and a 2-year major league contract worth a total of $317,000. | | Saturday, July 12th, 1980 | | Signed Elwood Allen to a minor league contract with a signing bonus of $132,600. | | Tuesday, July 8th, 1980 | | Signed Miguel Torres to a minor league contract with a signing bonus of $22,700. | | Wednesday, June 25th, 1980 | | Signed Chris Reynolds to a minor league contract with a signing bonus of $42,200. | | Monday, June 16th, 1980 | | Activated CF Otto Coleman from the disabled list. | | LF Lévy Gauthier was designated for assignment and placed on waivers (from active). | | Saturday, April 26th, 1980 | | Placed CF Otto Coleman on the 9-day disabled list. | | Purchased the contract of RF Rob Clay from Triple A Oshawa. | | Tuesday, March 25th, 1980 | | Activated 3B Robert Nelson from the disabled list. | | Saturday, March 15th, 1980 | | Placed 3B Robert Nelson on the 9-day disabled list. | | Sunday, November 11th, 1979 | | Signed bench coach Ángel Nieves to a 4-year, $96,900 per year contract. | | Monday, October 1st, 1979 | | Bench Coach Daniel Villegas leaves the team, his contract was not renewed. | | Signed Team Trainer Dan Palmer to a 2-year contract extension. | |
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