▁opened ▁his ▁out door ▁season ▁at ▁the ▁Sem in ole ▁Tw il ight ▁meet ▁in ▁May , ▁recording ▁ 9 . 9 8   seconds ▁in ▁the ▁ 1 0 0   m ▁and ▁ 1 9 . 8 9   seconds ▁for ▁the ▁ 2 0 0   m . ▁He ▁began ▁to ▁particip ate ▁in ▁Diam ond ▁League ▁meet ings , ▁compet ing ▁on ▁the ▁European ▁circuit ▁for ▁the ▁first ▁time . ▁He ▁beat ▁Wal lace ▁Spe arm on ▁at ▁the ▁Golden ▁G ala ' s ▁ 2 0 0   m ▁race , ▁breaking ▁Michael ▁Johnson ' s ▁meet ▁record . ▁He ▁also ▁took ▁to ▁the ▁national ▁stage , ▁winning ▁the ▁ 1 0 0   m ▁and ▁finishing ▁as ▁the ▁ 2 0 0   m ▁runner - up ▁at ▁the ▁ 2 0 1 0 ▁USA ▁Out door ▁Track ▁and ▁Field ▁Championships . ▁A ▁week ▁later , ▁D ix ▁beat ▁T ys on ▁Gay ▁at ▁the ▁Pref ont aine ▁Classic ▁for ▁another ▁meet ▁record ▁of ▁ 1 9 . 7 2   seconds . ▁In ▁August ▁at ▁a ▁meet ▁in ▁N ott w il , ▁Switzerland , ▁D ix ▁ran ▁a ▁new ▁personal ▁best ▁of ▁ 9 . 8 8 ▁seconds , ▁finishing ▁second ▁behind ▁N esta ▁Carter ▁who ▁also ▁set ▁a ▁new ▁personal ▁best ▁of ▁ 9 . 8 6 ▁seconds . ▁An ▁injury ▁at ▁the ▁London ▁Grand ▁Prix ▁brought ▁an ▁end ▁to ▁his ▁season . ▁ ▁In ▁the ▁first ▁meeting ▁of ▁the ▁ 2 0 1