It’s Mavericks mourning day, and Deron Williams’ name is now the hot topic in Dallas. ESPN.com reports that Dwight Howard’s decision to commit to the Magic for another season has put a big wrench in the Mavs’ plan to acquire DWill: “One source well-acquainted with Williams’ thinking told ESPN.com this weekend that the Mavericks, in their current state, have no better than a ’50-50 shot’ of getting D-Will’s signature in July … despite the fact that the Nets aren’t any closer to landing Howard than they are.”