The Toronto Raptors, Dallas Mavericks, Memphis Grizzlies, and Orlando Magic all agreed in principle to a four-team sign-and-trade deal Wednesday night.Orlando will sign-and-trade Hedo Turkoglu to Toronto. Shawn Marion will be signed-and-traded to Dallas along with Kris Humphries from Toronto and Greg Buckner from Memphis. Toronto will also receive Antoine Wright and Devean George from Dallas. Memphis will receive Jerry Stackhouse from Dallas, Quincy Douby from Toronto, and cash considerations...