| Sunday, August 11th, 1957 | Signed Clyde Everett to a minor league contract with a signing bonus of $12,600. | Saturday, August 10th, 1957 | Signed Michael Walker to a minor league contract with a signing bonus of $56,800. | Monday, July 29th, 1957 | Signed Maurice Inman to a minor league contract with a signing bonus of $9,200. | Sunday, July 28th, 1957 | Signed Eduardo López to a minor league contract with a signing bonus of $2,900. | Sunday, July 7th, 1957 | Signed Bill Jacobs to a minor league contract with a signing bonus of $27,100. | Thursday, July 4th, 1957 | MR Anastasio Pérez was designated for assignment and placed on waivers (from active). | Wednesday, July 3rd, 1957 | Signed 1st round draft pick Jason Wallace for a signing bonus of $133,700 and a 2-year major league contract worth a total of $267,400. | Monday, June 10th, 1957 | Purchased the contract of 1B Dave McGrath from Triple A Port Credit. | SS Leo Nash was designated for assignment and placed on irrevocable waivers. | Tuesday, May 7th, 1957 | Placed SP Manuel López on the 60-day disabled list. | Monday, February 25th, 1957 | Activated SP Jorge Rivera from the 60-day disabled list. | MR Jason Olsen was designated for assignment, placed on waivers and taken off the 40-man roster. | Saturday, November 3rd, 1956 | Signed general manager Rafael López to a 4-year, $20,200 per year contract. | |
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