| Saturday, June 15th, 1957 | Promoted SP Chris James to Double A Austin. | Received SP Pedro Corona from Double A Austin. | Received SS Alex Austin from Double A Austin. | Drafted C Bobby Pyatt in the 1957 first-year player draft (Round 6, Pick 2, 89th overall pick). | Drafted SP Kai Young in the 1957 first-year player draft (Round 7, Pick 2, 105th overall pick). | Drafted SS Hilton Osborne in the 1957 first-year player draft (Round 8, Pick 2, 121st overall pick). | Drafted SS José Ortíz in the 1957 first-year player draft (Round 9, Pick 2, 137th overall pick). | Drafted 1B John Wagner in the 1957 first-year player draft (Round 10, Pick 2, 153rd overall pick). | Promoted 2B Stan Willis to Double A Austin. | Received C William Reed from Double A Austin. | Wednesday, June 12th, 1957 | Activated LF Rick Lee from the disabled list. | Tuesday, August 28th, 1956 | Released 3B Alec Dunn. | |
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