| Friday, September 23rd, 1966 | Activated RF Hollis Scott from the disabled list. | Wednesday, August 10th, 1966 | Signed Tracy Adams to a minor league contract with a signing bonus of $44,300. | Thursday, July 28th, 1966 | Activated MR Ken Grady from the 60-day disabled list. | MR Paul O'Reilly was designated for assignment and placed on waivers (from active). | Saturday, July 23rd, 1966 | Signed Sergio Martínez to a minor league contract with a signing bonus of $13,400. | Tuesday, July 19th, 1966 | Placed MR Carlos Cruz on the 60-day disabled list. | Tuesday, July 5th, 1966 | Placed SP António Gómez on the 60-day disabled list. | Wednesday, June 29th, 1966 | Signed Chris Schaefer to a minor league contract with a signing bonus of $9,400. | Monday, May 23rd, 1966 | Activated SS Francisco López from the disabled list. | 1B Patrick Berry was designated for assignment and placed on waivers (from active). | Saturday, March 26th, 1966 | Placed MR Ken Grady on the 60-day disabled list. | Monday, December 6th, 1965 | Assigned SP Ben Hudson to Triple A Thornhill. | Activated MR Greg Fox from the 60-day disabled list. | MR Paul O'Reilly was designated for assignment and placed on waivers (from active). | |
|