Using the name Jazzmine, she joined Extreme Championship Wrestling in 1999 as a part of the Impact Players, which included Jason, Lance Storm, and Justin Credible. She later began a feud with Jason and defeated him at Heat Wave in 1999. She appeared on a random basis before leaving the company before ECW was shut down due to bankruptcy.
Jazz made her World Wrestling Federation (WWF) debut as a heel on the 2001 Survivor Series pay-per-view during a six-pack challenge match for the WWF Women's Championship, which had been vacated by Chyna after her departure from the company. Ultimately, Trish Stratus was the winner for the match and the championship.
Following her debut in the company, Jazz began her first rivalry with then-Women's Champion Trish Stratus as on the January 14, 2002 episode of Raw, Jazz received a push as she defeated Jacqueline to become the number one contender to Stratus' Women's Title. Jazz received her championship match against Trish at the Royal Rumble pay-per-view, where she was unsuccessful in capturing the title, however, on the February 4, 2002 episode of Raw, Jazz defeated Stratus to win the Women's Championship for the first time. On March 17, at WrestleMania X8, Jazz successfully defended her title against Lita and Trish Stratus in a triple threat match.
On May 6, 2002, the World Wrestling Federation was renamed to World Wrestling Entertainment, subsequently renaming the title to the WWE Women's Championship, and as a result, Jazz became the last woman to hold the Women's Title under the WWF banner and the first to hold it under the WWE banner. On the April 29, episode of Raw, Jazz challenged Bubba Ray Dudley for the Hardcore Championship, and although she didn't win the championship, she successfully helped Stevie Richards capture it. On the May 6, episode of Raw, Jazz was helped by Richards to retain her title against Trish Stratus, after knocking her with a superkick. After the match, Bubba Ray attacked both Steven and Jazz to try and regain his title, although multiple superstars began competing for it, changing simultaneously from holders like Raven, Justin Credible, Crash, Trish Stratus and finally back to to Richards after being helped by Jazz. However, due to a torn ACL, Jazz dropped her title to Stratus in a hardcore rules match the following week on the May 13, episode of Raw. Post-match, she was attacked by both Bubba Ray and Stratus as he performed an aided superbomb through a table on her.
Jazz made her return on the January 27, 2003 episode of Raw, viciously attacking Trish Stratus after a Chicago Street Fight for Victoria's Women's Championship, in which Stratus was defeated. She made her return to in–ring action on the February 10 episode of Raw, defeating Molly Holly in a singles match.
Jazz involved herself in the feud between Stratus and Victoria upon her return. She immediately took out Stratus and dominated in matches against Molly Holly and Jacqueline. She competed in a triple threat match for the Women's Championship at WrestleMania XIX against Stratus and Victoria, but Stratus walked away with the title. During this time, she took on the managerial services of Theodore Long, which led to another Women's Championship reign after defeating Stratus at Backlash. She had another successful title defense at Judgment Day in a fatal four-way match involving Stratus, Victoria and Jacqueline. However, she lost the title in a battle royal to Gail Kim on June 30. During the match Jazz had sustained a chipped and dislocated shoulder and needed several weeks to rehabilitate. She returned from injury in early 2004, but was used sparingly. Later that year, she became manager and valet for Rodney Mack. She was released from WWE in November 2004.
In mid-2006, Jazz was one of several Extreme Championship Wrestling alumni contracted to compete in WWE's new version of the promotion. Jazz made her first appearance as part of the new ECW during the WWE vs. ECW Head to Head show on June 7, where she faced then-Women's Champion Mickie James in a losing effort. Jazz, however, did not continue an on-screen role in the brand and only made a few appearances at ECW house shows before returning to ECW in September. She stayed under contract with WWE until January 18, 2007 when she was released by WWE.