The Swiss teenager , a twice French Open junior champion and a Wimbledon juniors winner , had already proven her main stage mettle by reaching the quarters at this year 's Australian Open .
<response> The <misc>Swiss</misc> teenager , a twice <misc>French Open</misc> junior champion and a <misc>Wimbledon</misc> juniors winner , had already proven her main stage mettle by reaching the quarters at this year 's <misc>Australian Open</misc> . </response>