Better to say how Belgian "sisters" dominance is the thing of the past. Now did you think Serena and Venus could go 80-3 this year and every year?? Even Martina N and Chrissie and Steffi lost sometimes. If not, we would see many Grand Slam winners in the WTA! No, Serena and Venus healthy are still best on tour and will dominate. I think they just might not be "hungry" like a few years ago. Now after winning 10 slams over a few years and relgularly facing each other in finals the sisters might not be mentally so into it. Also they have a life off court.