Re: What kind of career for Tati?
She's 19, and has been stalled twice now in the mid-20's because of injury, no other reason, and couldn't get the momentum going. If she hadn't gotten injured at Miami last year, it wouldn't be hard to see her in the top 15 today. As it is, she's got a huge opportunity to pile on ranking points. She only earned twon on clay last year, and only 38 at Wimbledon. If she can get into the top 16 by the French, she's got a great shot at getting to the 4th round, same at Wimbledon, which gives her a very good buffer. With the ranking point inflation, she's in pretty much the same boat as Serena. They both have under 200 to defend until the US Open, and that's easy to make up with inflation.
In five years, she'll be 24. Venus, Serena, Dementieva, Henin, Schnyder, Clijsters, Mauresmo, Hingis, and Petrova will all be retired, or at least nowhere near their peak. There's not a ton of girls under 22 in the top 30 right now, and I don't see why Golovin couldn't be a top 10 player by then. She's gotten markedly better each season, but has been very, very unlucky with her injuries. Contrast that with Kirilenko, who hasn't gotten better and hasn't had injuries.
Interesting to note, the only top 30 players with less tournaments played in the past 52 weeks are Henin, Sharapova, Mauresmo, Clijsters, and Serena.