| Friday, August 23rd, 1957 | Received LF Raúl Peña from Double A Edna. | Thursday, July 11th, 1957 | Released 3B Phil Hall. | Saturday, June 15th, 1957 | Received 1B John Ivey from Double A Edna. | Promoted SS John Ivey to Double A Edna. | Received CF Mike Wise from Double A Edna. | Promoted 2B Jorge Guzmán to Double A Edna. | Received 2B Mario Peralta from Double A Edna. | Received 2B Glenn Livingston from Triple A Oshawa. | Drafted 2B Dan Snow in the 1957 first-year player draft (Round 6, Pick 12, 99th overall pick). | Drafted 2B Floyd Castle in the 1957 first-year player draft (Round 7, Pick 12, 115th overall pick). | Drafted MR Dan Bontrager in the 1957 first-year player draft (Round 8, Pick 12, 131st overall pick). | Drafted SP Pedro Marino in the 1957 first-year player draft (Round 9, Pick 12, 147th overall pick). | Drafted SP Carlton McLeod in the 1957 first-year player draft (Round 10, Pick 12, 163rd overall pick). | Promoted 2B Mario Peralta to Double A Edna. | Promoted RF Rob Turner to Double A Edna. | Received 3B António Martínez from Double A Edna. | Received 2B Jorge Guzmán from Double A Edna. | Saturday, June 8th, 1957 | Released 3B Greg Case. | Tuesday, May 21st, 1957 | Activated 2B Ramón Castro from the disabled list. | Sunday, April 28th, 1957 | Placed 2B Ramón Castro on the 15-day disabled list. | Thursday, April 11th, 1957 | Received MR Ken McRob from Double A Edna. | Tuesday, April 9th, 1957 | Released 1B Bob Lord. | Monday, January 7th, 1957 | Activated SP Tom Mayer from the disabled list. | Tuesday, August 28th, 1956 | Signed hitting coach Ken Robinson. | |
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