Indeed, Froome was Wiggo's number 2 when Wiggo won the TDF, it was reported the following year that Sky (their team) was going to push for Froome to be the lead man and as a consequence Wiggo dropped out. If you get to be number two in a team you normally have a couple of choices, you might get offered number one in a lesser team or your number one might jump ship to another team for more money or might even retire so you soldier on until either of those things happens. There is almost no chance of anyone challenging Froome for first place tomorrow (not in the stage, as Cloverjo said the sprinters will contest that), partly because of tradition and partly because their teams wouldn't allow it, what you do this year they might do next year. And yes there is a women's TDF