The Dolphins head to Arizona this Sunday with a winning record but the Cardinals (5-2) will be a big test. Omar Kelly and Dave Hyde discuss what Miami must do to keep their three-game winning streak going. Will Tua Tagovailoa show growth in his second start at quarterback? Are the Dolphins playoff contenders or pretenders? Plus Omar and Dave take reader questions. The Dolphins take on the Cardinals Sunday at 4:25 p.m.