Heat’s Davion Mitchell making clear he won’t stay down or slow down‎

If Davion Mitchell had something to prove to the Miami Heat this preseason, that mission was accomplished even before Friday night’s exhibition finale against the Orlando Magic at Kia Center. The Heat this season will operate at his speed. And he won’t back down. The player listed as shortest on the roster arguably has stood tallest this preseason in multiple regards. Toughness? That would be ...