Through the concepts and theories discussed in the previous section, we can begin to formulate an optimal strategy for rosters in various contests, and it all begins with the flex position. Because we know running backs carry the narrowest range of outcomes and, more importantly, smaller standard deviation from the mean scoring, it should be the optimal choice for the flex position in contests where we want to manage variance (H2H, small field GPPs, cash games). On the opposite side of that spectrum is large field GPPs, where, because of the top-heavy nature of the payout structure, Game Theory . . .