Serena Williams' former coach has questioned Ben Shelton's decision to hire Juan Carlos Ferrero, suggesting the move will "not move the needle" for the American player. Shelton has brought Ferrero, a former world No. 1, onto his coaching staff. The criticism highlights doubts about whether the partnership will significantly improve Shelton's results.
Serena Williams' Ex-Coach Questions Ben Shelton's Hiring of Juan Carlos Ferrero
