Losing Pietrangelo to free agency in 2020 may've been one of Doug Armstrong's greatest missteps as general manager.
It was a difficult day in St. Louis Blues history: Alex Pietrangelo, captain and number-one defenseman of the Blues on their way to a Stanley Cup Championship in 2019 (where he scored the winning goal!), became an unrestricted free agent in the summer of 2020. He signed a seven-year contract with the Vegas Golden Knights worth $61.6 million, carrying a cap hit of $8.