Haylie Wagner, Gwen Svekis and Victoria Hayward all ran into one another’s arms upon the final out of their softball season, on Sept. 28. Wagner was the starting pitcher, Svekis her catcher and Hayward the center fielder, and theirs was the standard embrace of teammates winning a championship game: exhaustion mixed with joy, streaked with happy tears. Except that this situation was not standard at all. Almost a year earlier, they had been the first three players to sign on with an upstart, experimental league; and while they were, for this moment, on the same squad, they’d separated and rejoined sporadically over the course of the six-week season, acting as teammates one week and opponents the next.