▁the ▁Netherlands ▁in ▁the ▁Davis ▁Cup ▁between ▁ 1 9 9 1 ▁and ▁ 2 0 0 1 , ▁compiling ▁a ▁ 1 7 – 1 0 ▁record . ▁He ▁helped ▁the ▁Netherlands ▁reach ▁the ▁World ▁Group ▁semif inals ▁in ▁ 2 0 0 1 . ▁ ▁S iem er ink ' s ▁career - high ▁rank ings ▁were ▁world ▁No . ▁ 1 4 ▁in ▁singles ▁( in ▁ 1 9 9 8 ) ▁and ▁world ▁No . ▁ 1 6 ▁in ▁doubles ▁( in ▁ 1 9 9 6 ). ▁His ▁career ▁prize - m oney ▁tot aled ▁$ 4 , 3 4 7 , 6 9 3 . ▁ ▁After ▁his ▁playing ▁career ▁S iem er ink ▁was ▁captain ▁of ▁the ▁Dutch ▁Davis ▁Cup ▁team ▁from ▁ 2 0 0 6 ▁until ▁ 2 0 1 6 . ▁ ▁Other ▁In ▁February ▁ 2 0 1 8 , ▁S iem er ink ▁became ▁team ▁manager ▁of ▁the ▁Amsterdam ▁professional ▁football ▁club ▁A FC ▁Ajax . ▁ ▁Career ▁final s ▁ ▁Singles : ▁ 1 2 ▁( 4 ▁wins , ▁ 8 ▁losses ) ▁ ▁Dou bles : ▁ 1 8 ▁( 1 0 – 7 ) ▁ ▁References ▁ ▁External ▁links ▁▁▁▁▁▁▁ ▁Category : 1 9 7 0 ▁birth s ▁Category : L iving ▁people ▁Category : D utch ▁male ▁tennis ▁players ▁Category : O lymp ic ▁tennis ▁players ▁of ▁the ▁Netherlands ▁Category : Pe ople ▁from ▁Kat w ijk ▁Category : T ennis ▁players ▁at ▁the ▁ 1 9