| Sunday, September 27th, 1964 | Activated RF Mike Brown from the disabled list. | Thursday, September 24th, 1964 | Activated RF Minoru Kiyomizu from the disabled list. | Monday, September 7th, 1964 | Placed RF Minoru Kiyomizu on the 13-day disabled list. | Monday, August 10th, 1964 | Signed Louis-Émile Landry to a minor league contract with a signing bonus of $20,900. | Sunday, August 9th, 1964 | Signed Bruce Grant to a minor league contract with a signing bonus of $20,600. | Sunday, June 28th, 1964 | Signed Burt Pearcy to a minor league contract with a signing bonus of $7,700. | Friday, June 26th, 1964 | Signed Roberto Rodríguez to a minor league contract with a signing bonus of $5,800. | Sunday, June 14th, 1964 | Purchased the contract of SS Sam Wade from Double A Alice. | 3B Michael Walls was designated for assignment and placed on waivers (from active). | Friday, May 29th, 1964 | 2B Júlio Román was designated for assignment and placed on waivers (from active). | Friday, May 1st, 1964 | Purchased the contract of 3B Michael Walls from Triple A Keswick. | 1B Howard Barry was designated for assignment, placed on waivers and taken off the 40-man roster. | Saturday, April 4th, 1964 | Placed LF Darren Nelson on the 13-day disabled list. | Sunday, March 29th, 1964 | Placed LF Vincente Ibarra on the 13-day disabled list. | Saturday, December 14th, 1963 | Signed bench coach Thu Vu to a 5-year, $27,300 per year contract. | |
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