Juuse Saros made 37 saves, and Juuso Parssinen had two assists for the Predators (14-13-4), who have won two straight after losing six in a row (0-4-2).
"Great accomplishment for Roman," Nashville coach John Hynes said. "The franchise has had so many real good, successful players. I think it speaks volumes, not only about his talent, but his longevity and what he means to the organization. Having the opportunity to coach him and deal with him every day, I'd like to say it's not surprising, such a talented guy that's driven and committed.
"The consistency level that he plays with is certainly exceptional. You don't get recognized for those things and accomplish those things if you're not a highly talented player that's really driven, and that's what he is."
Connor Murphy had a goal and an assist, and Petr Mrazek made 33 saves for the Blackhawks (7-20-4), who have lost eight in a row and 16 of 17 (1-15-1).
"Whether it's a lapse of focus from us, if we have a couple good shifts and feel like we're getting rolling, we're not staying disciplined enough to keep that going for a duration of time," Murphy said. "And I believe that once we commit to that a little more … we'll get rewarded for playing the right way."
Nino Niederreiter gave Nashville a 1-0 lead at 9:23 of the first period, scoring from the high slot off a breakaway pass by Cody Glass.