N'afọ 2013, Brown bụ aka ochie n'ịgba ọsọ, o ritekwara ọlaọcha n'ọsọ ọsọ ihe mgbochi dị mita 110 n'asọmpi Pan American Junior Championships
na Medellin, Colombia. Ọ meriri onye Colombia Juan Carlos Moreno, onye guzobere ndekọ ọhụrụ South American Junior na 13.42. A họpụtara Brown na "USA Today" All-American Track and Field Team. Na 2013 Texas Class 4A Zute, ọ meriri aha steeti na ihe mgbochi 110-mita (13.63 s), wee were nke atọ na mita 100 (10.37 s). Ọ gbara ọsọ nke kachasị mma nke 7.76 sekọnd na mgbochi 60m dị n'ime ụlọ, oge kachasị ọsọ na mba ahụ na 2013. Ọ gbara ọsọ PR nke 13.38 sekọnd na ihe mgbochi 110m na 2013 Texas Relays, oge kachasị elu na US na 2013. O meriri ihe mgbochi 110m na 2013 USATF National Junior Olympics (13.88 s) na USATF Junior Nationals (13.69 s). O dekwara oge kachasị mma nke 37.32 sekọnd na ihe mgbochi 300m na 2012 Texas Class 4A Meet, ebe o debere nke mbụ.