@TeamUSA: RT @Olympics: 🇺🇸 heptathlete Anna Hall aims "to be the best ever" - and has used a major injury to shift her mindset. Olympic champ & world record holder Jackie Joyner-Kersee 👀 "I can't wait to see her future." @annaahalll | @WorldAthletics | @TeamUSA https://t.co/ld8QJdILSo https://t.co/P2Ob65NTjp