Walker notched an assist, two hits, two PIM and a plus-2 rating in Thursday's 5-4 overtime win over the Sharks.
Walker set up Radek Faksa's goal, which sparked the Blues' third-period rally. Those two forwards, along with Alexei Toropchenko, have formed an effective fourth line early in the season. Walker doesn't bring a lot of offense -- his career high is 13 points from 45 games last year -- but he can add a physical presence. The 30-year-old has struggled to keep his place in the lineup, but the Blues' lack of forward depth this year could help him earn a career year.