| Thursday, August 7th, 1975 | Activated 2B Javier Elizondo from the disabled list. | Tuesday, July 22nd, 1975 | Activated LF Wade Hayman from the disabled list. | Friday, July 11th, 1975 | Placed 2B Javier Elizondo on the 15-day disabled list. | Monday, July 7th, 1975 | Placed LF Wade Hayman on the 15-day disabled list. | Saturday, July 5th, 1975 | Activated RF Wade Hayman from the disabled list. | Friday, June 20th, 1975 | Placed RF Wade Hayman on the 15-day disabled list. | Wednesday, June 18th, 1975 | Activated MR Zach Holcomb from the disabled list. | Sunday, June 15th, 1975 | Drafted CF Wayne Arthur in the 1975 first-year player draft (Round 7, Pick 1, 128th overall pick). | Drafted 2B Javier Elizondo in the 1975 first-year player draft (Round 8, Pick 1, 148th overall pick). | Drafted SS Orlando Rivera in the 1975 first-year player draft (Round 9, Pick 1, 168th overall pick). | Drafted CF Tony Miller in the 1975 first-year player draft (Round 10, Pick 1, 188th overall pick). | Friday, May 30th, 1975 | Activated SS Scott Hughes from the disabled list. | Wednesday, May 21st, 1975 | Placed CL Juan Quintana on the 15-day disabled list. | Tuesday, May 20th, 1975 | Activated LF Bryce Morse from the disabled list. | Friday, May 9th, 1975 | Activated RF Wade Hayman from the disabled list. | Wednesday, May 7th, 1975 | Activated LF Jim Bennett from the disabled list. | Monday, May 5th, 1975 | Placed LF Bryce Morse on the 15-day disabled list. | Friday, April 18th, 1975 | Placed C Guy McKenzie on the 15-day disabled list. | Friday, April 11th, 1975 | Placed SS Scott Hughes on the 15-day disabled list. | Placed LF Jim Bennett on the 15-day disabled list. | Friday, January 24th, 1975 | Activated SP Miguel Días from the disabled list. | Monday, December 16th, 1974 | Activated MR Zach Holcomb from the disabled list. | Friday, December 13th, 1974 | Released SP Al Jones. | Monday, September 30th, 1974 | HC Leonard Brooks retires. | MR John Martin becomes a free-agent. | Tuesday, August 27th, 1974 | Released 3B Joe Rich. | Thursday, August 22nd, 1974 | Pitching Coach Alonso Ávila leaves the team, his contract was not renewed. | Released 2B Paul Murray. | |
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