As a pro, she helped the Riveters to the NWHL Isobel Cup championship in 2018 and shared MVP honors at the league's All-Star Game that year with forward Hayley Scamurra.
Koelzer had 14 points (five goals, nine assists) in 20 games in three injury-plagued NWHL seasons.
In March, she was named to the NHL and NHLPA Female Hockey Advisory Committee.
Koelzer is a member of the PWHPA's Dream Gap Tour to promote, advance and support a single, viable professional women's hockey league in North America.
Now she's a history-making coach who's spending a lot of time on the road these days recruiting players for Arcadia's inaugural team.
Koelzer said that, as a coach of color, she's intrigued when she sees minority players on the recruiting trail. She grew up in Horsham, Pennsylvania, near Arcadia's campus, and was one of the few black players in the area.
Though her playing experiences were positive overall, she said there were times when she was targeted on the ice because of her race or gender. She said she can relate to what some players of color may be going through today.
In October, USA Hockey stiffened the penalty for using racial or derogatory slurs from a game misconduct to a match penalty, which carries a five-minute penalty, disqualification from the game in which it occurs, and suspension until a USA Hockey affiliate or junior league has conducted a hearing to review the incident.
"This is obviously an assumption, but when you see a minority player you kind of think to yourself that chances are they may have had to endure, face and power through a bit more adversity than your average youth player has had to face," Koelzer said. "Obviously, not to say that's it's the only thing I'm looking for and, obviously, that's not the only demographic of student athlete that I'm looking at. But it definitely piques my interest … when I see a minority hockey player out there. It makes me wonder 'What is their story, do we have similarities? What kind of character do they have?'"