| | | Friday, September 22nd, 1978 | | Activated CF José Saldaña from the disabled list. | | Tuesday, September 12th, 1978 | | Activated 2B Ricardo Sánchez from the 60-day disabled list. | | Friday, September 8th, 1978 | | Activated 2B Masaharu Koumura from the disabled list. | | Wednesday, August 30th, 1978 | | Activated SP John Lancaster from the 60-day disabled list. | | SP León Valadez was designated for assignment, placed on waivers and taken off the 40-man roster. | | Monday, August 14th, 1978 | | Failed to sign 10th round draft pick Manny Baltiérrez. | | Sunday, August 13th, 1978 | | Signed Carlos Salazar to a minor league contract with a signing bonus of $12,400. | | Thursday, August 10th, 1978 | | Signed Mauro Vásquez to a minor league contract with a signing bonus of $37,400. | | Signed Wilford Collins to a minor league contract with a signing bonus of $16,500. | | Wednesday, August 9th, 1978 | | Signed Lance Rollo to a minor league contract with a signing bonus of $50,200. | | Thursday, August 3rd, 1978 | | MR Phil Wood was designated for assignment, placed on waivers and taken off the 40-man roster. | | Wednesday, July 12th, 1978 | | Signed Wade Barnes to a minor league contract with a signing bonus of $129,500. | | Monday, April 3rd, 1978 | | Placed RF Nam-cheol Kim on the 9-day disabled list. | | Sunday, April 2nd, 1978 | | Placed MR Sam Wolfe on the 9-day disabled list. | | Thursday, November 10th, 1977 | | Signed bench coach Cecil Ainsley to a 5-year, $41,700 per year contract. | | Sunday, October 9th, 1977 | | Signed hitting coach Luis Castro to a 5-year, $101,900 per year contract. | |
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