St. Louis obtained McMichael, Milton Gastrin and the No.16th overall pick in the 2026 NHL Entry Draft from Washington on Tuesday in exchange for Jordan Kyrou.
McMichael notched 14 goals, 46 points and 142 shots on net across 78 regular-season appearances with the Capitals in 2025-26. He will probably slot into a middle-six role and see power-play time with the Blues during the 2026-27 campaign.