| Tuesday, August 16th, 1977 | Placed RF Rob Clay on the 15-day disabled list. | Saturday, August 13th, 1977 | Activated 1B Jorge Salas from the disabled list. | Thursday, August 4th, 1977 | Activated LF Juan Soberón from the disabled list. | Tuesday, August 2nd, 1977 | Placed RF R.J. Stewart on the 15-day disabled list. | Sunday, July 31st, 1977 | Placed LF Tony Gamboa on the 15-day disabled list. | Friday, July 29th, 1977 | Placed 1B Jorge Salas on the 15-day disabled list. | Sunday, July 10th, 1977 | Activated LF Pancho Vega from the disabled list. | Tuesday, June 28th, 1977 | Activated LF R.J. Stewart from the disabled list. | Thursday, June 23rd, 1977 | Activated SS Tony Gamboa from the disabled list. | Saturday, June 18th, 1977 | Activated LF Juan Soberón from the disabled list. | Wednesday, June 15th, 1977 | Promoted C Morton Cotton to Double A Edna. | Received SP Juan Vázquez from Double A Edna. | Received LF Denis Girard from Double A Edna. | Drafted SP Arturo Colón in the 1977 first-year player draft (Round 7, Pick 1, 131st overall pick). | Drafted SS Andrés Estrada in the 1977 first-year player draft (Round 8, Pick 1, 151st overall pick). | Drafted SP Tomás Roa in the 1977 first-year player draft (Round 9, Pick 1, 171st overall pick). | Drafted 3B Jesús Méndez in the 1977 first-year player draft (Round 10, Pick 1, 191st overall pick). | Monday, June 13th, 1977 | Placed LF R.J. Stewart on the 15-day disabled list. | Monday, June 6th, 1977 | Placed LF Pancho Vega on the 15-day disabled list. | Monday, May 23rd, 1977 | Placed SS Tony Gamboa on the 15-day disabled list. | Tuesday, January 18th, 1977 | Activated C Esteban Fríaz from the disabled list. | Saturday, August 28th, 1976 | Activated RF Tom Chambers from the disabled list. | |
|