| Monday, August 13th, 1979 | Signed Chip Harris to a minor league contract with a signing bonus of $91,800. | Friday, August 10th, 1979 | Signed John Hatfield to a minor league contract with a signing bonus of $19,500. | Thursday, August 9th, 1979 | Signed Duane Watson to a minor league contract with a signing bonus of $14,400. | Wednesday, August 8th, 1979 | Signed Luis Antonio Ruíz to a minor league contract with a signing bonus of $71,100. | Monday, August 6th, 1979 | Placed RF Joe Fox on waivers. | Friday, August 3rd, 1979 | Signed Juan Hesía to a minor league contract with a signing bonus of $26,400. | Friday, April 27th, 1979 | Activated 1B Iván Pacheco from the disabled list. | LF William Sloan was designated for assignment and placed on waivers (from active). | Monday, January 1st, 1979 | Signed free agent 2B Manny López to a 1-year contract worth a total of $51,634. | Wednesday, December 20th, 1978 | Signed free agent 3B Ricardo Kidd to a 1-year contract worth a total of $51,634. | Assigned 3B Ricardo Kidd to Triple A Guelph. | Wednesday, October 18th, 1978 | Signed free agent CF Juan Ramos to a 1-year contract worth a total of $51,634. | Assigned CF Juan Ramos to Triple A Guelph. | Monday, October 2nd, 1978 | 1B Matt Tate retires. | Signed Manager John Manning to a 3-year contract extension. | Signed Bench Coach Dax Lawson to a 3-year contract extension. | Signed Pitching Coach Qi-zhen Mo to a 1-year contract extension. | Signed Hitting Coach Nick Sweet to a 3-year contract extension. | |
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