| Thursday, September 25th, 1980 | Activated 2B Justin Kass from the 60-day disabled list. | Saturday, September 13th, 1980 | Activated SP John Beatty from the disabled list. | Monday, August 11th, 1980 | Signed Jeff McQuartie to a minor league contract with a signing bonus of $57,700. | Signed Glenn Glanville to a minor league contract with a signing bonus of $22,800. | Sunday, August 10th, 1980 | Signed Tim Day to a minor league contract with a signing bonus of $38,700. | Friday, August 8th, 1980 | Signed Rob Warren to a minor league contract with a signing bonus of $148,700. | Sunday, July 20th, 1980 | Activated MR Mike Piper from the 60-day disabled list. | MR Christian Calvert was designated for assignment and placed on waivers (from active). | Thursday, July 3rd, 1980 | Signed Daniel Robbins to a minor league contract with a signing bonus of $98,300. | Wednesday, June 25th, 1980 | Placed 2B Justin Kass on the 60-day disabled list. | Thursday, April 17th, 1980 | Placed CL Gustavo Vélez on the 60-day disabled list. | Monday, April 7th, 1980 | Activated MR Ramón Moya from the disabled list. | Thursday, April 3rd, 1980 | Activated MR Gustavo Vélez from the disabled list. | Saturday, March 29th, 1980 | Placed CF Juan Garza on the 9-day disabled list. | Tuesday, March 25th, 1980 | Placed MR Ramón Moya on the 9-day disabled list. | Tuesday, March 18th, 1980 | Placed MR Gustavo Vélez on the 9-day disabled list. | Friday, October 19th, 1979 | Signed team doctor Rudolph Murphy to a 5-year, $61,700 per year contract. | Sunday, October 7th, 1979 | Signed hitting coach Benny Figueroa to a 5-year, $60,400 per year contract. | |
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