Chicago fell behind 1-0 as it was outshot 17-7 in the first period. The Jets picked up the pace and took charge with four goals in the second before Dubois iced it in the third.
With Siemian leading the offense Sunday, the Bears gained just 292 total yards and went 4 of 13 on third down. But they got off to a solid start with Chicago scoring 10 points on its first two possessions.
DeRozan scored 30 points for Chicago, which was coming off encouraging victories over Boston and Milwaukee. Zach LaVine had 27 points, and Nikola Vucevic finished with 13 points and 13 rebounds.
