: Res earch ▁instit utes ▁in ▁the ▁United ▁States ▁Category : History ▁of ▁science ▁Category : History ▁of ▁technology <0x0A> </s> ▁Juan ▁Martín ▁del ▁Pot ro ▁was ▁the ▁two - time ▁ ▁def ending ▁champion ▁but ▁chose ▁not ▁to ▁defend ▁his ▁title . ▁ ▁Stefan os ▁Ts its ip as ▁won ▁his ▁first ▁ATP ▁World ▁Tour ▁title , ▁defe ating ▁Ern ests ▁Gul bis ▁in ▁the ▁final , ▁ 6 – 4 , ▁ 6 – 4 . ▁With ▁the ▁win , ▁he ▁became ▁the ▁first ▁Greek ▁player ▁to ▁win ▁an ▁ATP ▁title . ▁Gul bis ▁lost ▁his ▁first ▁ATP ▁Tour ▁final , ▁after ▁six ▁singles ▁titles ▁in ▁a ▁row . ▁ ▁Se eds ▁The ▁top ▁four ▁se eds ▁receive ▁a ▁by e ▁into ▁the ▁second ▁round . ▁ ▁Draw ▁ ▁Final s ▁ ▁Top ▁half ▁ ▁B ottom ▁half ▁ ▁Qual ifying ▁ ▁Se eds ▁ ▁Qual ifiers ▁ ▁L ucky ▁los er ▁▁ ▁J ürgen ▁Z opp ▁ ▁Qual ifying ▁draw ▁ ▁First ▁qual ifier ▁ ▁Second ▁qual ifier ▁ ▁Third ▁qual ifier ▁ ▁Four th ▁qual ifier ▁ ▁References ▁ ▁Main ▁draw ▁ ▁Qual ifying ▁draw ▁ ▁Category : 2 0 1 8 ▁Stockholm ▁Open <0x0A> </s> ▁Ian ▁J ary d ▁Silver man ▁( born ▁ 1 9 9 5 ) ▁is ▁an ▁American ▁sw immer ▁from ▁Baltimore , ▁Maryland . ▁He ▁has ▁m ild ▁c ere br al ▁p als y ▁and ▁won ▁a ▁gold ▁medal ▁in ▁the ▁S 1 0 ▁ 4 0 0   m ▁fre est