Lowdown: When is doping not doping? Easy, when it has a TUE. In today's Lowdown, Lee Rodgers is in a comparative mood: Wiggins, Van den Driessche, Dekker and Rasmussen, do they have something in common? It's not black and white, but then it never is. Then there are the dopers of the past: Gonzalez, Millar and Ullrich, some fairing better than others after the end of their careers.