| Tuesday, August 26th, 1980 | Activated RF Justin Pope from the disabled list. | Monday, August 11th, 1980 | Placed RF Justin Pope on the 15-day disabled list. | Sunday, June 29th, 1980 | Activated LF Greg Turner from the disabled list. | Wednesday, June 4th, 1980 | Placed LF Greg Turner on the 15-day disabled list. | Thursday, May 29th, 1980 | Activated 1B Bruce Reese from the disabled list. | Wednesday, May 14th, 1980 | Activated SS Tony Hall from the disabled list. | Sunday, May 4th, 1980 | Placed 1B Bruce Reese on the 15-day disabled list. | Tuesday, April 15th, 1980 | Placed 1B Chase O'Halloran on the 15-day disabled list. | Friday, September 7th, 1979 | Received MR Mao Gou from Triple A Welland. | Saturday, August 25th, 1979 | Signed Manager Armando Álvarez to a 1-year contract extension. | Signed Pitching Coach Juan Molina to a 2-year contract extension. | Signed Hitting Coach Alfonso Johnson to a 2-year contract extension. | |
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