Intimidation is far secondary to the efficiency and power of Serena Williams' game. They are the reason she's so intimidating.
During the week in Madrid, the new blue clay surface has been discussed as if players were now being asked to play tennis underwater. The head games leading to the French Open are in full swing.
Must be nice to be Victoria Azarenka right now, eh? She's sitting on top of the tennis world watching all her cohorts inexplicably collapse.