Ashleigh Barty retires: Simona Halep, Andy Murray, others react to world No. 1 leaving tennis at age 25 | CBS Sports Headlines Ashleigh Barty retires: Simona Halep, Andy Murray, others react to world No. 1 leaving tennis at age 25 The tennis world congratulated Barty on her storied career ESN … Continue reading Ashleigh Barty retires: Simona Halep, Andy Murray, others react to world No. 1 leaving tennis at age 25