A Texas teenager who prosecutors said provoked an athlete from a rival team before fatally stabbing him at a track meet has been found guilty of murder. MCKINNEY, Texas (AP) — A Texas teenager who fatally stabbed a 17-year-old track athlete from a rival team during a competition was convicted of murder Tuesday in a trial that drew attention far beyond the booming Dallas suburb where the two students attended different high schools. A jury rejected Karmelo Anthony’s claims of self-defense during