They're not official members of the Dallas Mavericks, but Wayne L. Winston and his partner Jeff Sagarin might as well be. For the last three seasons, Mavericks owner Mark Cuban has used a player rating system designed by Winston and Sagarin to to help determine lineups and make personnel decisions. During that time, the Mavs have gone from a perennially bad team to one of the league's best teams. Not to imply that Winston and Sagarin deserve all the credit, or even most of the credit, for the Mavs' success. But they surely deserve some.