Joseph signed a one-year, $950,000 contract with St. Louis on Tuesday, per Elliotte Friedman of Sportsnet.
Joseph compiled two goals, nine assists, 42 shots on net, 44 blocked shots and 47 hits across 52 regular-season contests with Pittsburgh in 2023-24. He will add some depth to the blue line of St. Louis. Ottawa traded forward Mathieu Joseph to the Blues on Tuesday, allowing Pierre-Olivier to be on the same team as his older brother.