The last time around I took a look at some rivalries on the men’s side of things that l think would be a good sell to build the sport from a marketing perspective. Today I want to broaden that to include the women (and a hybrid) – who actually tend to compete against reach other on a more regular basis than the men. The first rivalry I want to look at really hasn’t become one yet but I think could be a doozy – Allyson Felix v Shelly Ann Fraser Pryce over 200 meters. Both women have experienced rivalries in other events – Felix v Veronica Campbell Brown over 200,…