The senior hurler started the regional matchup against the Ducks, but failed to record an out before suffering the injury. Heflin faced just two batters, who both reached base on bunt singles, before exiting.
Heflin, the three-time defending Horizon League Pitcher of the Year, was a major catalyst toward helping the Flames take home the Horizon League championship, leading the team with more than 140 innings of work and amassing a 2.08 ERA and 151 strikeouts during the regular season.
The injury likely ends a stellar career that saw Heflin become just the third Horizon League pitcher in history to earn three conference Pitcher of the Year awards during her career, joining fellow Flame Samantha Luli, who did it from 1998-2000, and Cleveland State's Amanda Macenko, who accomplished the feat from 2009-2011.
The school did not comment on the injury, though Heflin confirmed the injury's severity on Twitter:
@AHartwig01 Yes— Elaine Heflin (@Elaine_Heflin) May 20, 2017