| Tuesday, August 19th, 1980 | Activated CL Alberto Arreola from the disabled list. | Sunday, July 20th, 1980 | Activated CF Barry Nankervis from the disabled list. | Tuesday, July 8th, 1980 | Placed SP Germán Álvarez on the 15-day disabled list. | Monday, July 7th, 1980 | Activated RF Carlos Salazar from the disabled list. | Friday, July 4th, 1980 | Placed CF Barry Nankervis on the 15-day disabled list. | Sunday, June 22nd, 1980 | Placed RF Carlos Salazar on the 15-day disabled list. | Sunday, June 15th, 1980 | Promoted 1B Pedro Mendoza to Double A Anaheim. | Drafted LF Hugh Hart in the 1980 first-year player draft (Round 6, Pick 6, 110th overall pick). | Drafted MR Michael Brooks in the 1980 first-year player draft (Round 7, Pick 6, 131st overall pick). | Drafted 2B Jeffery Frederick in the 1980 first-year player draft (Round 8, Pick 6, 151st overall pick). | Drafted 1B Kel McRob in the 1980 first-year player draft (Round 9, Pick 6, 171st overall pick). | Drafted SS Pedro Herrera in the 1980 first-year player draft (Round 10, Pick 6, 191st overall pick). | Thursday, May 8th, 1980 | Placed CF Barry Nankervis on the 15-day disabled list. | Sunday, May 4th, 1980 | Placed CL Alberto Arreola on the 15-day disabled list. | Thursday, February 21st, 1980 | Activated SP Mo-ruo Seto from the disabled list. | Thursday, September 13th, 1979 | Signed manager Randy Fell. | Thursday, August 23rd, 1979 | Manager Rich Adkins leaves the team, his contract was not renewed. | Pitching Coach Alejandro Vélez leaves the team, his contract was not renewed. | Hitting Coach Claudio Martínez leaves the team, his contract was not renewed. | |
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