At least for one night, the Bulls took a break from the turmoil that has defined this six-game trip. They lost Jimmy Butler for the entirety of it as the trip began. They of course lost Derrick Rose for the entire season on the second stop in Portland, Ore. And they lost four straight, which had never before happened in the regular season under Tom Thibodeau. But a determined effort led by Luol Deng produced a 99-79 victory over the Pistons on Monday at the Palace of Auburn Hills. Deng scored a season-high 27 points and helped the Bulls pull away late with a 19-0, fourth-quarter run. Taj Gibson sank his first seven shots and added his career-high of 23 points. And Tony Snell, making his second NBA start, added 13 for the Bulls, who shot 53.2 percent. "Derrick Rose isn't playing, but you know the team they put on the floor is going to compete," Pistons coach Mo Cheeks said beforehand.