| Wednesday, September 20th, 1978 | Placed 1B Marc Paradis on waivers. | Friday, September 8th, 1978 | Activated SP Gus Chandler from the 60-day disabled list. | Saturday, August 19th, 1978 | Activated MR Raúl García from the 60-day disabled list. | MR Alfredo Ramírez was designated for assignment, placed on waivers and taken off the 40-man roster. | Friday, August 11th, 1978 | Signed Josh Baker to a minor league contract with a signing bonus of $136,500. | Tuesday, August 8th, 1978 | Signed Brian Stevenson to a minor league contract with a signing bonus of $62,400. | Monday, August 7th, 1978 | Signed Felipe Aalbers to a minor league contract with a signing bonus of $73,500. | Saturday, July 22nd, 1978 | Signed Peter Johnson to a minor league contract with a signing bonus of $134,200. | Saturday, June 24th, 1978 | Signed Tim Cantrell to a minor league contract with a signing bonus of $19,300. | Sunday, June 18th, 1978 | Signed Frank Thompson to a minor league contract with a signing bonus of $150,500. | Tuesday, May 16th, 1978 | Activated RF Anthony Cooke from the disabled list. | CF William Sloan was designated for assignment and placed on waivers (from active). | Thursday, February 23rd, 1978 | Purchased the contract of C Joe Williams from Triple A Port Credit. | MR Freddie Jones was designated for assignment, placed on waivers and taken off the 40-man roster. | Assigned RF William Sloan to Triple A Port Credit. | Signed free agent C Juan Valadez to a 1-year contract worth a total of $44,914. | C Joe Williams was designated for assignment, placed on waivers and taken off the 40-man roster. | Tuesday, October 11th, 1977 | Signed manager Jaime Flores to a 5-year, $112,900 per year contract. | |
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