▁her ▁long time ▁friend ▁Margaret ▁Os bor ne ▁du P ont . ▁They ▁won ▁their ▁first ▁U . ▁S . ▁doubles ▁title ▁as ▁a ▁team ▁at ▁the ▁ 1 9 4 2 ▁U . ▁S . ▁National ▁Championships . ▁That ▁was ▁the ▁first ▁of ▁nine ▁consecutive ▁doubles ▁titles ▁at ▁the ▁U . ▁S . ▁national ▁tournament . ▁This ▁was ▁the ▁longest ▁championship ▁run ▁in ▁history ▁in ▁any ▁event ▁at ▁any ▁Grand ▁S lam ▁tournament . ▁Their ▁attempt ▁at ▁a ▁t enth ▁consecutive ▁title ▁was ▁un success ful ▁because ▁Os bor ne ▁du P ont ▁was ▁injured ▁and ▁unable ▁to ▁play ▁the ▁ 1 9 5 1 ▁U . ▁S . ▁national ▁tournament . ▁Os bor ne ▁du P ont ▁also ▁did ▁not ▁play ▁there ▁in ▁ 1 9 5 2 . ▁In ▁ 1 9 5 3 , ▁their ▁winning ▁stre ak ▁as ▁a ▁team ▁at ▁the ▁U . ▁S . ▁national ▁tournament ▁reached ▁ 4 2 ▁before ▁they ▁lost ▁to ▁Dor is ▁Hart ▁and ▁Sh ir ley ▁F ry ▁in ▁the ▁final , ▁ 6 – 2 , ▁ 7 – 9 , ▁ 9 – 7 . ▁Their ▁career ▁record ▁as ▁a ▁team ▁at ▁the ▁U . ▁S . ▁national ▁champion ships ▁was ▁ 5 8 – 2 , ▁winning ▁twelve ▁of ▁the ▁four teen ▁times ▁they ▁entered ▁the ▁tournament ▁and ▁losing ▁only ▁twelve ▁sets ▁in ▁those ▁ 6 0 ▁matches . ▁They ▁played ▁W im ble don ▁as ▁a ▁team ▁seven ▁times , ▁winning ▁five ▁titles ▁and ▁compiling ▁a ▁