Amber Cox , the Mercury President and CEO , took over Gaines ' GM duties .
However , the Mercury got off to a slow start , and ultimately fired coach Corey Gaines on August 8 , 2013 , replacing him with Russ Pennell .
Amber Cox , the Mercury President and CEO , took over coach ' GM duties .
However , the Mercury got off to a slow start , and ultimately fired coach Corey Gaines on August 8 , 2013 , replacing him with Russ Pennell .