sentences:  Stubbs, currently second, was the youngest person to achieve ten doubles wins, at 24 years, 1 month.Of the active players, Casey Dellacqua, tenth, has the most doubles wins at seven.Jelena Dokic was the youngest player to compete for Australia, and also the youngest person to win a match for Australia when she defeated Mariana Díaz Oliva in 1998 aged 15 years, 3 months.