| Sunday, August 21st, 1955 | Activated MR Paul Braun from the disabled list. | Sunday, August 14th, 1955 | Placed C Mark Sexton on the 15-day disabled list. | Saturday, August 13th, 1955 | Placed MR Kip Ball on the 15-day disabled list. | Thursday, August 11th, 1955 | Activated SS Francisco Pagán from the disabled list. | Monday, August 8th, 1955 | Activated RF Keith Hines from the disabled list. | Tuesday, June 28th, 1955 | Placed RF Keith Hines on the 15-day disabled list. | Wednesday, June 15th, 1955 | Promoted CF Oliver Ayala to Double A Laredo. | Drafted 1B Juan Hernández in the 1955 first-year player draft (Round 7, Pick 3, 109th overall pick). | Drafted C Mark Sexton in the 1955 first-year player draft (Round 8, Pick 3, 125th overall pick). | Drafted SP Curt Roop in the 1955 first-year player draft (Round 9, Pick 3, 141st overall pick). | Drafted MR Darryl Reese in the 1955 first-year player draft (Round 10, Pick 3, 157th overall pick). | Friday, May 13th, 1955 | Placed SS Jimmy Hill on the 15-day disabled list. | |
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