As WNBA free agency opens, Phoenix Mercury All-Star center Brittney Griner will be testing the free agent market for the first time in her 11-year career, according to AP Sports.Thank you for reading this post, don’t forget to subscribe! The 10-time All-Star is an unrestricted free agent and is playing in the inaugural Unrivaled season, … Continue reading Report: Mercury star to test free agency for first time in career