Stosur feels better than ever at Wimbledon At her 11th attempt, Samantha Stosur is finally starting to feel at ease on the grass courts of Wimbledon. The All England Club has often been a stressful place for Australia's top-ranked tennis player, who has reached the third round only once (2009). But the 14th seed spoke of feeling a new clarity on grass after opening her campaign with an impressive 6-1 6-3 win over Slovakian teen Anna Schmiedlova. Stosur considered it one of her best performances on her least-favoured surface and she gets another opportunity to build momentum against Russian world No.86 Olga Puchkova on Thursday. "Overall I feel probably a little bit more clarity when I'm out on the court," Stosur said. I obviously don't know what that's going to equate to but hopefully it's going to mean a decent tournament for me because I do feel like I've been playing a lot more confidently on the grass this time around. It's probably a point where I've been trying to get to for a long time. For whatever reason this year it feels a little bit better. Stosur knew virtually nothing about Schmiedlova coming into the tournament and she also has little idea of what to expect from Puchkova. The pair have met once before, with Stosur winning in straight sets on a hard court in Miami six years ago, but the match clearly hasn't stuck in the Australian's mind. I think we practised maybe one warm-up or something at the Australian Open. I don't know that much," Stosur said. On this surface, I've got to definitely be ready to be down low and preparing early for each shot. Stosur will be joined in day four action by Bernard Tomic, who overcame a mid-match dizzy spell to defeat American 21st seed Sam Querrey 7-6 (8-6) 7-6 (7-3) 3-6 2-6 6-3 on Tuesday. Tomic, 20, called a doctor in the fourth set complaining of dizziness and poor vision but later attributed the problem to simply under-eating at breakfast. The 2011 Wimbledon quarter-finalist on Thursday meets another American in James Blake, a player 13 years his senior. The pair have never met but Tomic is particularly confident after ousting Querrey. "He (Blake) is going to be very difficult to play but he doesn't serve as good as Sam," Tomic said. I've got to step up and be aggressive. I'm sure I can win this match, too. Tomic has called on officials to overturn a ban on his father and coach so he can attend the rest of the tournament. John Tomic's credentials have been suspended for a year following an assault charge, while he has been barred from attending Wimbledon even as a spectator. Officials have indicated they won't budge on the stance, leaving John Tomic to watch his son on television from a rented house near Wimbledon village. Lleyton Hewitt faces German Dustin Brown on Wednesday.