Asked why he seems to fit so much better in Dallas than Washington, Dinwiddie said, “Not to beat a dead horse, I just think our commitment to the collective and to winning games is all that matters.” The Mavs are 6-1 when Dinwiddie plays, including Saturday’s win, when he filled Luka Doncic’s spot in the starting lineup while the superstar rested with a minor toe injury. Dinwiddie said he feels the freedom to be aggressive while understanding exactly what the Mavs need from him, specifically his ability to penetrate.