| Saturday, August 20th, 1955 | Released MR Lyle Adams. | Wednesday, August 17th, 1955 | Released 3B Jim Hewitt. | Thursday, August 11th, 1955 | Placed 2B Javier Kennedy on the 15-day disabled list. | Monday, August 8th, 1955 | Released MR Bob Adams. | Thursday, July 28th, 1955 | Received SP Bob Adams from Triple A Ajax. | Wednesday, July 20th, 1955 | Placed 2B Javier Kennedy on the 15-day disabled list. | Sunday, July 3rd, 1955 | Placed 1B Joe Morris on the 15-day disabled list. | Placed 1B Ramón Villaroel on the 15-day disabled list. | Wednesday, June 15th, 1955 | Drafted SS Yoritomo Murakami in the 1955 first-year player draft (Round 6, Pick 15, 104th overall pick). | Drafted SS Malcolm MacIntyre in the 1955 first-year player draft (Round 7, Pick 15, 121st overall pick). | Drafted MR Mario Hernández in the 1955 first-year player draft (Round 8, Pick 15, 137th overall pick). | Drafted RF Mike O'Tormey in the 1955 first-year player draft (Round 9, Pick 15, 153rd overall pick). | Drafted MR Chris Thompson in the 1955 first-year player draft (Round 10, Pick 15, 169th overall pick). | Tuesday, May 24th, 1955 | Placed LF Javier Ríos on the 15-day disabled list. | Saturday, May 14th, 1955 | Activated RF Javier Ríos from the disabled list. | Tuesday, May 10th, 1955 | Placed 3B Dennis Jones on the 15-day disabled list. | Monday, December 6th, 1954 | Activated MR César Guzmán from the disabled list. | Sunday, November 21st, 1954 | Placed MR César Guzmán on the 15-day disabled list. | |
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