- Defeated Carlos Palomino in the 1972 Olympic Trials. Ranzany lost to Sugar Ray Seales in the final.
- Defeated Adolfo Viruet by a twelve-round decision to win the NABF Welterweight Championship in 1976.
- Knocked out in two rounds by Pipino Cuevas for the WBA Welterweight Championship in 1978.
- Lost the NABF Welterweight Championship to Sugar Ray Leonard by a fourth-round TKO in 1979.
- Worked as a correctional officer at Folsom Prison for nearly 20 years and established a boxing program for inmates.
- Inducted into the Sacramento Sports Hall of Fame. 57 of Ranzany's 69 professional fights were in Sacramento.