I have learned what Serena wants to happen and what actually happens are sometimes 2 different things. She will have to be consistent, and the only match in the tournament that that happened was against Kirilenko. All others have been weird yoyo bouts with her. If she comes out focused from start to finish the match is hers. Clay gives Maria more time for her shots, and of the two Maria is usually the more consistent off the ground. Holding serve will be key which Serena has again only managed to go one match with no breaks. I don't discount Maria; she can be a tough customer.