"It was pretty tough to watch. She's a trooper," Auburn coach Jeff Graba said of Cerio, who was carried out of the arena on a stretcher.
Related: Auburn University gymnast Samantha Cerio ending career after knee injuries, focusing on wedding
Her team, which went on to compete in the regional final but failed to advance to the national championships, showed support for Cerio on social media with the hashtag #StickItForSam.
In an Instagram post Sunday, Cerio announced that the competition marked her "final night as a gymnast."
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"After 18 years I am hanging up my grips and leaving the chalk behind," she wrote. "I couldn't be prouder of the person that gymnastics has made me to become. It's taught me hard work, humility, integrity, and dedication, just to name a few. It's given me challenges and road blocks that I would have never imagined that has tested who I am as a person. It may not have ended the way I had planned, but nothing ever goes as planned."
She continued: "Thank you Auburn family for giving me a home and a chance to continue doing the sport that will always be my first love. I am honored to have had the privilege to represent the navy and orange AU for the past 4 years with my team by my side. Thank you for letting me share my passion with you. Thank you for letting me be a part of something bigger than myself."
Editor's note: This story has been corrected to say Cerio dislocated her knees, but did not break her legs.