The longtime Phoenix Mercury star is joining the Atlanta Dream, and discussed her decision in an Unrivaled social media clip.

Brittney Griner is leaving the Valley for Atlanta. After 11 seasons entirely played with the Phoenix Mercury, the 10-time All-Star center Griner has agreed to join the Atlanta Dream in free agency. ESPN's Shams Charania and Alex Phillipou were first to break the news.

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.

Griner entered the offseason as the second-longest tenured WNBA player with one team, having spent her entire career in Phoenix.

In a move that shakes up the WNBA, Brittney Griner is joining the Atlanta Dream in free agency after a decorated 11-season stint with the Phoenix Mercury.

After 11 seasons in Phoenix, 10-time WNBA All-Star Brittney Griner has agreed to a deal with the Atlanta Dream, sources tell me and @alexaphilippou. Griner spent her entire career with Mercury and now heads to Atlanta in one of most stunning free agency moves in league history. pic.twitter.com/NfdAuYOAVs

In Phoenix, the center lived up to her draft potential, won a title and was a fan favorite. What lies ahead in Atlanta?

Brittney Griner will leave a legendary legacy with the Mercury after playing 10 seasons with them, before signing with the Dream.

Brionna Jones, a formidable post presence, joins forces with Brittney Griner, Rhyne Howard, and Allisha Gray on the Atlanta Dream.

Brittney Griner is officially headed to the Atlanta Dream, ending her 11-season tenure with the Phoenix Mercury in one of the WNBA’s most significant free agency moves. The 10-time All-Star’s decision was announced Tuesday night.

Jones helped the Sun reach the WNBA Finals in 2019 and 2022, winning Sixth Player of the Year in the latter season.