| Thursday, September 28th, 1978 | Activated SP Carlos Moreno from the 60-day disabled list. | MR Máximo Rivera was designated for assignment, placed on waivers and taken off the 40-man roster. | Thursday, September 21st, 1978 | Activated RF Rich Emery from the disabled list. | Friday, September 15th, 1978 | Activated C Yoritomo Kamuta from the 60-day disabled list. | RF John Crossan was designated for assignment, placed on waivers and taken off the 40-man roster. | 3B Aaron Sharp was claimed off waivers from Chicago. | Tuesday, September 12th, 1978 | Placed RF Rich Emery on the 9-day disabled list. | Sunday, September 10th, 1978 | Activated 3B Jorge Herrera from the disabled list. | Monday, September 4th, 1978 | Activated SS Jeremy Lawson from the disabled list. | Friday, August 25th, 1978 | Activated SS Mark Henn from the disabled list. | 2B John Smith was designated for assignment and placed on waivers (from active). | Sunday, August 13th, 1978 | Signed Ed Chapman to a minor league contract with a signing bonus of $47,700. | Saturday, August 12th, 1978 | Signed Pepe Rodríguez to a minor league contract with a signing bonus of $186,300. | Signed Tony Rosas to a minor league contract with a signing bonus of $19,400. | Wednesday, August 9th, 1978 | Signed Ángel Fernández to a minor league contract with a signing bonus of $734,100. | Thursday, May 18th, 1978 | Placed SP Carlos Moreno on the 60-day disabled list. | Saturday, March 25th, 1978 | Placed RF Rich Emery on the 9-day disabled list. | Wednesday, March 1st, 1978 | Purchased the contract of MR Bruce Hoover from Triple A Timmins. | MR Tony Alonzo was designated for assignment, placed on waivers and taken off the 40-man roster. | Monday, October 24th, 1977 | Signed free agent SP Jason Mason to a 1-year contract worth a total of $115,600. | Demoted SP Tomás Molina to Triple A Timmins. | |
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