KNOXVILLE, Tenn. — Pat Summitt put women’s basketball on her back, breaking down barriers with her indomitable spirit and demanding respect for female athletes on her way to becoming the winningest coach in Division I college basketball history. The woman who lifted the sport to national prominence staring down players and officials with her icy glare will be remembered for far more than the impressive numbers she piled up over 38 seasons, including eight national titles. Summitt, 64, died peacefully Tuesday morning at Sherrill Hill Senior Living in Knoxville surrounded by those who loved her most, according to her son, Tyler.