A Texas high school star athlete was stabbed in the heart and left to die in his loving twin brother’s arms following a fight over a seat at a track meet, the boy’s heartbroken father said. Austin Metcalf was attending a track and field championship between other area schools at Kuykendall Stadium in Frisco, Texas, when the fatal attack happened on April 2. Metcalf, a junior at Frisco ISD’s Memorial High School, was in the stands at the stadium when a confrontation broke out between the teen and 17-year-old Karmelo Anthony. Anthony, a senior at Centennial High School, was allegedly...