O'Reilly garnered 1,001 voting points, including 48 first-place votes, to edge second-place right wing Mark Stone of the Vegas Golden Knights (881 voting points). Center Patrice Bergeron of the Boston Bruins, a Selke finalist for an unprecedented eighth consecutive year and owner of a record-tying four Selke wins, finished third with 809 points.
O'Reilly led the NHL in face-off wins for the second consecutive season (1,086), joining Bergeron (2013-14 through 2016-17) as the only player to post 1,000+ face-off wins in four straight seasons since the statistic was introduced in 1997-98. O'Reilly's face-off win percentage (56.9%, min. 750) ranked seventh in the NHL. He led the Blues in plus-minus (+22) and topped all St. Louis forwards in average ice time per game (20:46).
The 28-year-old native of Clinton, Ont., captured the third individual NHL Trophy of his career, following his Lady Byng Memorial Trophy win in 2014 and recent Conn Smythe Trophy selection as MVP of the 2019 Stanley Cup Playoffs. He is the second Blues player to capture the Selke, joining Rick Meagher (1990).