interface IRosterTransaction()
{
    public List<Dictionary<string,string>> AddPlayer(List<Dictoinary<string,string>> players);
    public Roster DropPlayer(List<Dictionary<string,string>> players, Dictionary<string,string> playerToDrop);
}

interface IRosterResearch()
{
    public void ProjectedPoints(List<Dictionary<string,string>> players);
    public void Injuries(List<Dictionary<string,string>> players);
}