Kostin (upper body) won't return to the lineup Saturday versus the Blue Jackets, Lou Korac of NHL.com reports.

The Blues' forward depth will be tested Saturday, as David Perron (upper body) is also out. Kostin's next chance to return will be Tuesday versus the Lightning, but there's been no timeline given yet. More information on Kostin's status should surface Sunday if the Blues hold a practice session.

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