 Ramba uchinyora ndima iyi - Tinsley akawana nhangemutange yake yakanakisisa mumakwikwi emamita 400 ane zvipingamupinyi muna 2007 aine nguva yemasekonzi 48,02. Akaisa wechitatu pa2010 USA Outdoor Track uye Field Championshipsnenguva yemasekonzi 48,46. Akakunda 400-mita zvipingamupinyi chiitiko pa2012 US Olympic Trials nenguva ye48.33 masekondi uye akawana nzvimbo muUS Olympic timu. 