▁final s ▁in ▁the ▁ 1 0 0 ▁and ▁ 2 0 0   m , ▁and ▁won ▁two ▁bronze ▁med als ; ▁the ▁only ▁American ▁track ▁ath lete ▁to ▁win ▁two ▁individual ▁med als ▁at ▁the ▁ 2 0 0 8 ▁Summer ▁Olympics . ▁He ▁suffered ▁an ▁injury ▁at ▁the ▁ 2 0 0 9 ▁US ▁Championships , ▁thus ▁missing ▁out ▁on ▁the ▁World ▁Championships , ▁and ▁a ▁contract ▁dispute ▁with ▁his ▁agent ▁resulted ▁in ▁only ▁a ▁hand ful ▁of ▁appearances ▁that ▁season . ▁In ▁ 2 0 1 1 ▁he ▁was ▁both ▁the ▁ 1 0 0 ▁and ▁ 2 0 0   m ▁American ▁champion ▁and ▁won ▁silver ▁med als ▁in ▁the ▁events ▁at ▁the ▁ 2 0 1 1 ▁World ▁Championships . ▁An ▁injury ▁at ▁the ▁ 2 0 1 2 ▁Olympic ▁tri als ▁meant ▁he ▁missed ▁a ▁second ▁Olympic ▁appearance . ▁ ▁Early ▁life ▁ ▁The ▁son ▁of ▁a ▁track ▁and ▁field ▁coach , ▁Walter ▁D ix ▁competed ▁at ▁athlet ics ▁meet ings ▁from ▁a ▁young ▁age , ▁special ising ▁in ▁s print ing ▁and ▁the ▁long ▁jump . ▁His ▁speed ▁also ▁translated ▁well ▁to ▁the ▁football ▁field , ▁and ▁he ▁often ▁played ▁the ▁sport ▁at ▁school . ▁D ix ▁was ▁an ▁accomplished ▁high ▁school ▁runner : ▁in ▁his ▁final ▁year ▁at ▁Cor al ▁Spr ings ▁High ▁School ▁in ▁ 2 0 0 4 ▁he ▁recorded ▁ 1 0 . 2 8   seconds ▁in ▁the ▁ 1 0 0 ▁meters , ▁then ▁third ▁all - time ▁on