| Wednesday, September 6th, 1978 | Placed MR Scott Wallace on waivers. | Friday, August 11th, 1978 | Signed Kenny Green to a minor league contract with a signing bonus of $21,200. | Monday, August 7th, 1978 | Activated 2B Emílio Martínez from the disabled list. | 3B Martín Sánchez was designated for assignment and placed on waivers (from active). | Saturday, July 29th, 1978 | Signed Adrián Cardona to a minor league contract with a signing bonus of $542,500. | Purchased the contract of RF Adrián Cardona from Single A Long Beach. | RF Alfonso Márquez was designated for assignment, placed on waivers and taken off the 40-man roster. | MR Hal Main was designated for assignment, placed on waivers and taken off the 40-man roster. | Traded 22-year-old minor league starting pitcher Elwood Rice to the The Bronx Ironmen, getting 25-year-old starting pitcher Jason Mason in return. | Tuesday, July 25th, 1978 | Signed Michael Young to a minor league contract with a signing bonus of $30,300. | Wednesday, July 5th, 1978 | Signed Tom Garner to a minor league contract with a signing bonus of $74,600. | Monday, March 20th, 1978 | Placed RF Joe Wright on the 9-day disabled list. | Friday, October 14th, 1977 | Signed team doctor Craig Petty to a 3-year, $58,100 per year contract. | |
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