Is Nolan Arenado the best third baseman in baseball? “Of course he is.” That’s the automatic answer for those who frequently venture to Coors Field or regularly watch Rockies games on TV. For them, it’s gospel truth. Arenado’s spectacular fielding — a tantalizing mixture of consistency and “did-you-see-that?!” acrobatics — has many Rockies fans thinking he has a chance to be the best third baseman of all time.