Stowers gained a scholarship to attend Louisiana State University and began to study Nutrition and Food Science there in 2010. She began to compete for the institution's LSU Lady Tigers track and field team and in her first major competition ranked sixth in the 60 m hurdles at the NCAA Indoor Women's Track and Field Championships with a personal best of 8.12 seconds. She was the winner of the Southeastern Conference titles indoors and outdoors, setting a personal best of 12.88 seconds at the latter meet. She won at the Penn Relays and was a quarterfinalist at the NCAA Outdoor Women's Track and Field Championships. She also competed at the 2011 USA Outdoor Track and Field Championships, where she was a semi-finalist. In her second year at Louisiana State, Stowers defended both her SEC titles and was a finalist indoors and out in NCAA competition. She won the Penn Relays for a second year running and ended the year with a best of 12.92 seconds for the 100 m hurdles. Reflecting her focus on studying, she was listed on the SEC Academic Honor Roll that year. At the 2012 United States Olympic Trials she was a semi-finalist. In 2013, she retained her SEC indoor title for a third time – only the second person to do so for Louisiana after Lolo Jones. She was again an NCAA finalist both indoors and outdoors, managing a third-place finish in the 60 m hurdles indoors. She suffered from a hamstring injury during the middle of the year, which contributed her defeat at the SEC Outdoor Championships. She again featured on the SEC Academic Honor Roll in 2013. In her fourth and final college year Stowers featured in the top three in NCAA competition. At the 2014 NCAA Indoor Championships she ran a school record of 7.94 to take third place again in a tight race, where the top three all finished within one hundredth of a second of each other. The 2014 NCAA Outdoor Championships bore similar results, as Stowers finished in a wind-assisted 12.54 seconds to place second behind Nelvis, who was just two hundredths ahead of her. She was usurped by Kentucky's Kendra Harrison in SEC competition, ranking second behind her both indoors and outdoors. Her third career win at the Penn Relays made her the first woman to achieve that feat. She ended the year on a high note at the 2014 USA Outdoor Track and Field Championships: after setting a personal record of 12.71 seconds in the qualifying round, she progressed to the final and finished in fourth place – her highest ever senior national ranking. Stowers finished her collegiate career with five titles in Southeastern Conference competition and seven All-American honors in NCAA competition.
Professional career
Stowers made a strong start to her professional career with a national title at the 2015 USA Indoor Track and Field Championships. Her winning time of 7.84 seconds took a tenth of a second off her previous best for the 60 m hurdles. No longer having to do both academics and sport, her new focus on hurdling brought results at the Drake Relays, where she moved up to twelfth on the all-time lists with a new personal record of 12.40 seconds – three tenths faster than she had gone before. She also defeated former Olympic champion Dawn Harper-Nelson and world champion Brianna Rollins in the process. She improved one hundredth further at the Jamaica International Invitational, with a meeting record of 12.39 seconds. Her debut appearance on the 2015 IAAF Diamond League circuit established her as an elite international performer. She won the Doha Diamond League meeting in a series record time of 12.35 seconds – this moved her up to seventh on the all-time rankings for the 100 m hurdles.
