| | | Tuesday, September 9th, 1980 | | Activated RF Clayton Pike from the disabled list. | | Thursday, August 14th, 1980 | | Failed to sign 4th round draft pick Don Stanley. | | Wednesday, August 13th, 1980 | | Signed Martin Franklin to a minor league contract with a signing bonus of $30,900. | | Placed MR Esa Lavinen on waivers. | | Sunday, August 10th, 1980 | | Signed Scot Ellis to a minor league contract with a signing bonus of $125,200. | | Friday, July 18th, 1980 | | Signed António Gonzáles to a minor league contract with a signing bonus of $94,400. | | Wednesday, July 2nd, 1980 | | SP Santiago Liriano was designated for assignment, placed on waivers and taken off the 40-man roster. | | Signed Toshikazu Hara to a minor league contract with a signing bonus of $691,000. | | Sunday, June 15th, 1980 | | Purchased the contract of LF Tom Gray from Triple A Uxbridge. | | 3B Derek Williams was designated for assignment and placed on waivers (from active). | | Thursday, May 15th, 1980 | | Activated SP Su-wu Guo from the 60-day disabled list. | | SP John McBord was designated for assignment, placed on waivers and taken off the 40-man roster. | | Tuesday, April 1st, 1980 | | Purchased the contract of 1B Brian Jarville from Double A Eagle Pass. | | C David O'Dwyer was designated for assignment, placed on waivers and taken off the 40-man roster. | | Friday, October 19th, 1979 | | Signed hitting coach Dennis Pennington to a 3-year, $117,800 per year contract. | | Wednesday, October 10th, 1979 | | Signed bench coach Randy Parker to a 4-year, $145,800 per year contract. | |
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