| Thursday, September 29th, 1955 | Placed SS Chris Copping on waivers. | Wednesday, September 21st, 1955 | Activated 2B Lúcio Hernández from the disabled list. | Sunday, September 11th, 1955 | Activated CF León Martínez from the disabled list. | Tuesday, September 6th, 1955 | Placed 2B Lúcio Hernández on the 15-day disabled list. | Sunday, August 21st, 1955 | Activated SP Ramón Márquez from the 60-day disabled list. | SP Duane Bridges was designated for assignment and placed on irrevocable waivers. | Saturday, August 13th, 1955 | Signed Artie Johnston to a minor league contract with a signing bonus of $10,200. | Friday, August 12th, 1955 | Activated MR Juan Sánchez from the disabled list. | CL Raúl Díaz was designated for assignment and placed on waivers (from active). | Thursday, August 11th, 1955 | MR Jonathan Turner was designated for assignment and placed on waivers (from active). | Signed Alfredo Alvarado to a minor league contract with a signing bonus of $7,200. | Wednesday, August 10th, 1955 | Placed CF León Martínez on the 15-day disabled list. | Recalled LF Carlos Gómez from Triple A Keswick. | Signed 1st round draft pick Júlio González for a signing bonus of $49,700 and a 2-year major league contract worth a total of $99,400. | Friday, August 5th, 1955 | Signed Matt Pew to a minor league contract with a signing bonus of $4,400. | Friday, July 29th, 1955 | Activated LF Nobuhito Umaba from the disabled list. | CF Adrián Roa was designated for assignment and placed on waivers (from active). | Signed Juan Peña to a minor league contract with a signing bonus of $24,000. | Friday, July 22nd, 1955 | Signed Gabriel Rivera to a minor league contract with a signing bonus of $3,900. | Tuesday, June 28th, 1955 | Signed Paul Patterson to a minor league contract with a signing bonus of $15,000. | Wednesday, June 22nd, 1955 | SP Michael Booker was designated for assignment and placed on waivers (from active). | Wednesday, May 25th, 1955 | Placed SP Ramón Márquez on the 60-day disabled list. | Wednesday, January 5th, 1955 | Activated SP Pete Smith from the 60-day disabled list. | SP Ramón Márquez was designated for assignment and placed on waivers (from active). | Thursday, December 2nd, 1954 | Signed free agent 3B Tsumemasa Yamanaka to a 1-year contract worth a total of $40,000. | 2B Chris Copping was designated for assignment and placed on irrevocable waivers. | Saturday, November 20th, 1954 | SP Michael Booker was designated for assignment and placed on waivers (from active). | Wednesday, November 17th, 1954 | Activated SP Michael Booker from the 60-day disabled list. | SP Ramón Márquez was designated for assignment and placed on waivers (from active). | Wednesday, November 3rd, 1954 | Signed hitting coach Greg Martin to a 5-year, $9,100 per year contract. | Tuesday, October 26th, 1954 | Signed manager Shane Knowles to a 5-year, $18,500 per year contract. | Monday, October 25th, 1954 | Signed bench coach Raúl García to a 5-year, $23,300 per year contract. | |
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