How do you grade Mark Cuban, Donnie Nelson?

The Dallas Mavericks entered the offseason knowing major roster changes were coming, yet every move would have to wait for and hinge on Deron Williams' decision. When Williams tweeted on the night of July 3 that he would remain with the Brooklyn Nets, Mavs owner Mark Cuban and president of basketball operations Donnie Nelson were forced to take a step back, reorganize and reach for those filed-away contingency plans. Then they watched the Los Angeles Lakers bulk up by bringing in Steve Nash, Dallas' top choice after Williams.