| Sunday, August 24th, 1980 | Activated RF Woody Robinson from the disabled list. | Thursday, August 21st, 1980 | Activated CL Roberto Gómez from the disabled list. | Sunday, July 27th, 1980 | Placed RF Woody Robinson on the 15-day disabled list. | Thursday, June 26th, 1980 | Placed LF Woody Robinson on the 15-day disabled list. | Monday, May 19th, 1980 | Placed CL Roberto Gómez on the 15-day disabled list. | Saturday, April 19th, 1980 | Placed SS António Salas on the 15-day disabled list. | Sunday, March 30th, 1980 | Activated SP Shinji Nakao from the disabled list. | Wednesday, January 2nd, 1980 | Activated SP Travis Irvin from the disabled list. | Monday, September 3rd, 1979 | Signed Pitching Coach Dave Guyer to a 1-year contract extension. | |
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