This interview with Hincapie is the latest evidence that at least in the press, people are viewing Discovery Channel as having as many as four legitimate options for the Tour: Hincapie, Popovich, Savoldelli and Azevedo. Hincapie, gentleman that he is, said that they were going into the race with two or three leaders but would sort it out.
I'm not sure I buy the premise. The route contains two monster ITTs, 52km at stage 7 and 57km at stage 18, both rolling, bumpy parcourses. Jose Azevedo is a competent time trialer, but he has no history of winning on such a course. By stage 8 he should be settling into his accustomed climber workhorse role.
Savoldelli, meanwhile, could do well on these time trial courses, but how much energy he has after the Giro is a huge question, and there's no reason to expect him to stay with the leaders on the few major climbing stages in the race, like Alpe d'Huez.
I really like both these guys, but Disco need to have clearly defined roles, and no more than two leaders if they expect to have any kind of support.