Diaz, along with her husband Jason Case, won the twenty-third installment of the American reality television show The Amazing Race.

[citation needed] Diaz graduated cum laude with a Bachelor of Arts in Broadcast Communication with a minor in Psychology from Barry University.

After having six second-place finishes overall, they won the $1 million grand prize and the Amazing Race 23 title over exes Tim & Marie and married ER doctors Nicole & Travis.

Diaz won her first notable pageant title in 2001 when she was crowned Miss Rhode Island Teen USA 2001.

In September 2007, Diaz won the Miss Rhode Island USA 2008 title in a state pageant held in Providence.