Go first if you’re the incumbent, last if you’re the challenger. In competitive sales presentations, where a series of sellers make their pitches one after another, the market leader is most likely to get selected if it presents first, according to Virginia Tech University researchers. But for a challenger, the best spot, by far, is to present last (http://bit.ly/NRpdp6). How widely this applies to other settings isn’t clear from the research, but in general, the middle is the place you’re most likely to get run over.