| Wednesday, August 17th, 1966 | Received MR Melvin Fry from Double A Edna. | Saturday, August 6th, 1966 | Released SS John Ivey. | Wednesday, June 15th, 1966 | Released 3B Clyde Hayes. | Promoted RF Jaake Mathijssen to Double A Edna. | Received 2B Gregory Bridges from Double A Edna. | Promoted C Mike Johnson to Double A Edna. | Promoted 3B Chet Lewis to Double A Edna. | Received C Jeff O'Neal from Double A Edna. | Received RF Jaake Mathijssen from Double A Edna. | Received RF Bartolo Uribe from Double A Edna. | Received CF Al Gunther from Double A Edna. | Promoted C Jeff O'Neal to Double A Edna. | Promoted RF Jaake Mathijssen to Double A Edna. | Received 3B Tom Hathaway from Double A Edna. | Drafted LF Miguel Uribe in the 1966 first-year player draft (Round 6, Pick 6, 99th overall pick). | Drafted MR Forest Hayes in the 1966 first-year player draft (Round 7, Pick 6, 117th overall pick). | Drafted SP Anastasio Valdéz in the 1966 first-year player draft (Round 8, Pick 6, 135th overall pick). | Drafted SP Edgar Bullock in the 1966 first-year player draft (Round 9, Pick 6, 153rd overall pick). | Drafted 1B Jason Owens in the 1966 first-year player draft (Round 10, Pick 6, 171st overall pick). | Promoted RF Feng-xiang Hark to Double A Edna. | Thursday, May 12th, 1966 | Activated MR Horia Todosia from the disabled list. | Wednesday, April 27th, 1966 | Placed SP Rafael Sotelo on the 15-day disabled list. | Thursday, March 24th, 1966 | Placed RF Ben McKnight on the 15-day disabled list. | Wednesday, February 9th, 1966 | Activated SP Rafael Sotelo from the disabled list. | |
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