. ▁ 2 5 ▁in ▁December ▁ 2 0 0 2 ▁and ▁doubles ▁ranking ▁of ▁No . ▁ 4 3 ▁in ▁September ▁ 2 0 0 2 . ▁▁ 2 0 0 2 – 0 4 ▁So eda ▁began ▁playing ▁professional ▁tournament s ▁regularly ▁in ▁ 2 0 0 2 ▁before ▁turning ▁professional ▁in ▁ 2 0 0 3 . ▁He ▁played ▁primarily ▁on ▁Asian ▁I TF ▁Fut ures ▁event . ▁So eda ▁rose ▁stead ily ▁through ▁his ▁ATP ▁ranking ▁over ▁the ▁next ▁three ▁years . ▁He ▁ended ▁ 2 0 0 4 ▁as ▁ranked ▁world ▁No . ▁ 4 9 3 . ▁▁ 2 0 0 5 – 0 7 ▁In ▁ 2 0 0 5 , ▁So eda ▁won ▁two ▁Fut ures ▁tournament ▁in ▁Japan ▁and ▁Sri ▁L anka , ▁and ▁he ▁made ▁his ▁debut ▁in ▁an ▁ATP ▁World ▁Tour ▁event ▁in ▁Ho ▁Chi ▁Min h ▁City , ▁losing ▁to ▁top ▁seed ▁Mar iano ▁Pu erta ▁in ▁the ▁first ▁round . ▁The ▁following ▁year , ▁So eda ▁had ▁a ▁very ▁steady ▁year ▁at ▁the ▁Ch allen ger ▁level , ▁reaching ▁the ▁quarter final s ▁or ▁better ▁seven ▁times , ▁including ▁his ▁first ▁Ch allen ger ▁final ▁in ▁A pt os . ▁He ▁also ▁won ▁the ▁Japan ▁F 4 ▁Fut ures . ▁So eda ▁entered ▁the ▁world ' s ▁top ▁ 2 0 0 ▁in ▁August ▁and ▁finished ▁ 2 0 0 6 ▁ranked ▁No . ▁ 1 8 2 . ▁ ▁Go ▁made ▁his ▁first ▁Grand ▁S lam ▁main - draw