The Yankees left little doubt that they were the team of the last decade, but what team was the most efficient from 2000 through 2009? Did the Yankees get the most bang for their 1.6 billion bucks or did someone else win more efficiently? And which team wasted enough money to claim the title of the least efficient team of the decade? The answers might surprise you -- and that means you at the players association, too -- especially because the most and least efficient teams are not determined solely by market size. So where did the Nats come in? And who is the worst? Should the Nats be pumping more $$ into payroll - or should they be holding on until they are ready to win? The answers might surprise.