Casey O’Brien, forward for the New York PWHL Sirens, concluded her rookie season as one of the league’s most promising young players, despite the team falling short of the playoffs. Selected third overall in the 2025 PWHL draft following an outstanding collegiate career at Wisconsin, O’Brien faced early challenges adapting to professional play. Initially emphasizing playmaking and passing, she was encouraged by head coach Greg Fargo and assistant coach Josh Sciba to assert herself more offensively and take more shots on goal.

O’Brien’s breakthrough came during a December 28 game in Dallas as part of the PWHL Takeover Tour. After a period of frustration and scoreless play, she scored her first professional goal and went on to complete a hat trick in the same game, signaling a shift in her confidence and role within the team. Her teammate Kristýna Kaltounková, the top overall pick in 2025, played a key supportive role in encouraging O’Brien to shoot more, helping her embrace a more aggressive style of play.

Over the course of the season, O’Brien led all rookies in the league with 22 points—seven goals and 15 assists—and finished second in team scoring behind Sarah Fillier. Recently named a finalist for the PWHL Rookie of the Year award, she will contend with Montréal’s defender Nicole Gosling and Boston’s Haley Winn for the honor at the upcoming league awards ceremony.

Despite her personal achievements, O’Brien expressed disappointment over the Sirens’ failure to secure a playoff berth. “The ultimate goal was to make the playoffs,” she said, noting that team success remains integral to how she measures her own performance. The Sirens were in playoff contention until the penultimate game of the season, amplifying the bittersweet nature of their outcome.

A native of SoHo, Manhattan, O’Brien has longstanding ties to the New York hockey community. She recounted memories of early morning practices in New Jersey and waking up before dawn for games at Chelsea Piers. A defining moment came when she skated during an intermission at Madison Square Garden as a child—a place where she would later return as a professional during the Sirens’ historic home game in April. “When they announced me, ‘Manhattan’s own, Casey O’Brien,’ I almost started crying,” she recalled.

Looking ahead, the Sirens secured O’Brien’s rights during the PWHL’s Phase 1 expansion process in early June by extending a qualifying offer. Motivated by the team’s near playoff miss, she is focused on refining her game and becoming a clutch performer in future critical moments. “The first thing I’m looking at going into the offseason is what I can do to be someone who in those big moments next year capitalizes,” O’Brien said, signaling her determination to contribute to the team’s success in the coming seasons.