Vaziri earned 15 All-America certificates during her Hoosier career, the most in school history, and was the 2007 Indiana University Female Athlete of the Year.

After turning in the second-fastest time in the nation, she earning a spot on the U.S. World Championship Team.

At the 2007 World Aquatics Championships held in Melbourne, Vaziri won a gold medal in the 50-meter backstroke and earned a silver medal by swimming the backstroke leg in the heats of the 4×100-meter medley relay.

[2] In the semifinals of the 50 m backstroke, she broke Janine Pietsch's world record of 28.19 with a time of 28.16.

[3][4] In the final of the 50 m backstroke, she equalled her own world record en route to winning gold.