- In August 2004, Daivari signed a WWE developmental contract.
- Khosrow Daivari and Muhammad Hassan debuted on the November 1, 2004 edition of "Raw."
- In June 2005, Hassan and Daivari were traded to the "Smackdown" roster.
- Due to intense media criticism and pressure from UPN, WWE dropped the Daiviri and Hassan characters in July 2005.
- Daivari returned to "Raw" on November 7, 2005. In early 2006, Daivari was moved to "Smackdown" to manage Mark Henry.
- After managing The Great Khali in Smackdown, the duo was moved to the ECW roster in October 2006.
- At ECW's December to Dismember, Daiviri defeated Tommy Dreamer.
- On June 17, 2007, Daivari was drafted to the Raw roster.
- Daiviri was released on October 16, 2007.