Sam Stosur beaten by Flavia Pennetta in the Hopman Cup Australia's Sam Stosur serves during her loss at the Hopman Cup today. AUSTRALIA'S hopes of staying alive in the Hopman Cup are resting on the shoulders of Bernard Tomic after Sam Stosur's home summer curse continued. Stosur was beaten by Italy's Flavia Pennetta 6-4 6-4 at Perth Arena today, leaving the veteran Aussie winless after her first two singles matches of the Australian summer. Stosur, ranked 18 in the world, lost to 19-year-old Canadian Eugenie Bouchard 4-6 6-2 6-3 on Saturday night. Serving at 4-4 in the second set, Stosur double faulted three times in the game before Pennetta prevailed after a long rally at her third break-point opportunity. Pennetta, aged 31 and ranked 31 in the world, served out the match despite having difficulties with the sun. Stosur, who has never beaten Pennetta, conceded she was becoming frustrated with her results in her home country but was confident she would be playing better by the time the Australian Open begins. France have opened their Hopman Cup campaign with a 2-1 win over the Czech Republic. It's really frustrating. I definitely want to play my best tennis here in Australia and so far I haven't been able to quite show that yet," she said. But hopefully with each match I can start building on something and play a little bit better each day. Hopefully by the end of this week, by Hobart and in Melbourne, hopefully I can be playing some of my best tennis. Every year I've managed to play well at some point. It's not like you start not so well in the first couple of matches and your whole year's shot. I think time on court is the most important thing at the moment. That's why this tournament is so great. Tomic faces Andreas Seppi in the men's singles, with Australia now needing to win that plus the mixed doubles rubber against the Italians to remain alive in the tournament. Mark Philippoussis and Jelena Dokic in 1999 remain the only Australian team to win the unique mixed teams event.