The NBA Cup resumes action Friday for its second day of group play, and a specific matchup provides a litmus test for two Eastern Conference teams that are surpassing preseason expectations. The Milwaukee Bucks host the Chicago Bulls as 3.5-point favorites with a total of 239.5 points. At 6-1, the Bulls own the conference’s top record and are doing it without shooting guard Coby White, who averaged 20.4 points last season. He has yet to play this year while still battling a calf injury. Point