O'Reilly ties Brett Hull (1990), Doug Gilmour (1986) and Bernie Federko (1986) as the only Blues players in franchise history to have recorded 21 points in a single postseason.
O'Reilly leads all players in the Stanley Cup Final with seven points, recording four goals and three assists.
Overall, O'Reilly has seven goals and 14 assists in 25 postseason games in 2019.