Kostin notched an assist and four hits in Saturday's 7-3 win over the Kings.
Kostin had a hand in the second of David Perron's three goals in the contest. Despite a first-line assignment at even strength, Kostin's overall usage is more representative of a bottom-six forward. He has two goals, one assist, six shots on net, 12 hits and four PIM through three contests, but he's likely just keeping a seat warm for Brandon Saad (COVID-19 protocols). When the Blues' lineup is fully healthy, it's unlikely Kostin plays above the third line.