| Tuesday, August 23rd, 1966 | Activated RF Carl Nicholson from the disabled list. | Thursday, June 23rd, 1966 | Released CF Bob Bell. | Wednesday, June 15th, 1966 | Released RF Bartolo Uribe. | Received MR Tony Morín from Double A San Antonio. | Drafted LF John Adams in the 1966 first-year player draft (Round 6, Pick 8, 101st overall pick). | Drafted SP Robinson Mejía in the 1966 first-year player draft (Round 7, Pick 8, 119th overall pick). | Drafted 1B Manuel Castro in the 1966 first-year player draft (Round 8, Pick 8, 137th overall pick). | Drafted MR Javier Santos in the 1966 first-year player draft (Round 9, Pick 8, 155th overall pick). | Drafted C Lorenzo Lugo in the 1966 first-year player draft (Round 10, Pick 8, 173rd overall pick). | Thursday, May 19th, 1966 | Placed RF Carl Nicholson on the 15-day disabled list. | Thursday, May 5th, 1966 | Activated SS Gabe Brown from the disabled list. | Saturday, April 30th, 1966 | Placed SP Aaron Priest on the 15-day disabled list. | Friday, April 22nd, 1966 | Placed RF Bill Honrigan on the 15-day disabled list. | Wednesday, April 20th, 1966 | Placed SS Gabe Brown on the 15-day disabled list. | Saturday, April 16th, 1966 | Placed SP António Juárez on the 15-day disabled list. | Saturday, September 4th, 1965 | Activated RF Carl Nicholson from the disabled list. | |
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