NBA trade deadline buyer's guide: How contenders can make moves before Feb. 5

We're using outdated terminology when we refer to the "trade market." In the modern NBA, buyers shop in one of a few very different sorts of markets. There is the relatively standard market, of course. Teams like Detroit and Toronto are good teams with clear needs and control of their own future first-round picks. These teams can get linked to several available players and usually decide to pay a modest price for a mild upgrade. They're making the sort of moves you'd expect at the deadline. They need shooting. They trade for a shooter. Pretty straightforward. But the all-in era of roster-building has created two new markets. A handful of teams, mostly in big markets, most of whom are either...