Brittney Griner is officially moving on from the Phoenix Mercury. Griner is signing a free-agent contract with the Atlanta Dream when free agency opens Sunday, ESPN's Shams Charania and Alexa Phillipou first reported.

Griner has spent her entire career with the Mercury, since her start in the WNBA in 2013. She is one of several WNBA free agents — including another Phoenix standout, Diana Taur

Brittney Griner’s time in Phoenix is over. The 10-time WNBA All-Star struck a one-year deal to join the Atlanta Dream in free agency Tuesday night, according to ESPN’s Shams Charania and Alexa Philippou. Specifics of the deal are not yet known. It will be made official after Saturday, when contracts across the league are allowed to be signed.

The WNBA landscape was shaken up Tuesday. First, the Phoenix Mercury traded for Connecticut Sun star Alyssa Thomas. Then, longtime Mercury star center Brittney Griner decided to leave Phoenix after 11 seasons to join the Atlanta Dream.

Brittney Griner has decided to leave the Phoenix Mercury and join the Atlanta Dream in free agency. The Team USA star confirmed her decision in a post on social media. There had been doubts about Griner's future with the Mercury after she became an unrestricted free agent and expressed her desire to test the market.

WNBA free agency has seen another big move, and it involves center Brittney Griner. The 11-year veteran, who has played her entire professional career with the Phoenix Mercury, is on the move.

In a stunning move, star free agent center Brittney Griner has agreed to a one-year deal with the Atlanta Dream, sources told ESPN.

Griner is the latest big name to move during the WNBA’s offseason, as she’ll leave the Mercury and head to Atlanta.