| Saturday, September 14th, 1957 | LF Eric Thompson was designated for assignment, placed on waivers and taken off the 40-man roster. | Traded 22-year-old minor league center fielder José García to the Los Angeles Moguls, getting 33-year-old right fielder Mike Mathews in return. | Thursday, September 12th, 1957 | Activated LF Kurt Harrington from the disabled list. | MR Chris Bergeron was designated for assignment, placed on waivers and taken off the 40-man roster. | Friday, September 6th, 1957 | Placed 3B Ben Anderson on waivers. | Tuesday, August 13th, 1957 | Signed James Smith to a minor league contract with a signing bonus of $4,300. | Placed 3B Ben Anderson on waivers. | Monday, August 12th, 1957 | Signed Denny Clement to a minor league contract with a signing bonus of $12,800. | Thursday, August 8th, 1957 | Signed Alan Johnson to a minor league contract with a signing bonus of $32,200. | Wednesday, July 31st, 1957 | Signed Fernando Hernández to a minor league contract with a signing bonus of $3,600. | Wednesday, July 24th, 1957 | Signed António Pérez to a minor league contract with a signing bonus of $2,600. | Monday, July 22nd, 1957 | Signed Pedro Torres to a minor league contract with a signing bonus of $9,700. | Sunday, June 30th, 1957 | Signed 1st round draft pick Andre Parkinson for a signing bonus of $159,600 and a 2-year major league contract worth a total of $319,200. | Thursday, May 2nd, 1957 | Activated RF Millard Kaufman from the disabled list. | LF Manuel Nava was designated for assignment and placed on irrevocable waivers. | Sunday, March 31st, 1957 | Placed SP Paul Dukes on the 60-day disabled list. | Sunday, March 17th, 1957 | Activated MR Joe Howell from the 60-day disabled list. | Saturday, January 5th, 1957 | Activated SP Paul Dukes from the 60-day disabled list. | SP Martin Keene was designated for assignment and placed on irrevocable waivers. | Wednesday, October 24th, 1956 | Signed team doctor Jim Donaldson to a 4-year, $14,600 per year contract. | Sunday, October 21st, 1956 | Signed manager Greg Boone to a 5-year, $27,500 per year contract. | |
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