Stanford University volleyball player Samantha Wopat has died of mysterious causes Sunday at age 19.
Nicknamed "Sam," the teenager's death was announced after she died at Stanford Hospital in Stanford, Calif. after spending eight days in intensive care.
No cause of death was indicated, but Wopat had been in the hospital's ICU since March 17 after a medical emergency took place at her campus housing.
"We are deeply saddened by the passing of Sam Wopat," said athletic director Bob Bowlsby in a statement, according to ESPN News. "She was an integral member of the Stanford Athletics family and a tremendous student and athlete."
The sophomore student athlete was a former member of the U.S. women's junior volleyball team. Additionally, she was a three-time member of the U.S. junior Olympic teams.
"Stanford University and the women's volleyball program have lost a wonderful young woman," added Bowlsby.
Wopat was surrounded by family, friends and teammates in the intensive care unit until her death, reported the San Francisco Chronicle. The athlete was considered one of the nation's best players. Born in Santa Barbara, Calif., Wopat graduated high school from Dos Pueblos High School in Goleta, Calif., where she played varsity volleyball, track and field, and basketball.
The 19-year-old was an outside hitter who averaged 25 sets as a sophomore, but did not play much as a freshman.
Wopat's twin sister, Carly, was also her teammate at Stanford after they both joined in 2010.
In addition to her sister Carly, Wopat leaves behind her parents, Ron and Kathy Wopat, and her younger brothers, Jackson and Eli.
On Twitter, users are expressing their sympathy and sadness over the loss of the young athlete.
"Sam Wopat is the number one trending topic on Yahoo. #ripSam im still shocked," wrote Nora.
Twitter user Jackie posted, "Still inshock [sic] about the passing of Sam Wopat. I cant even imagine what the Stanford Volleyball program is going through, praying for you all."
"Thoughts and prayers go out to the entire Stanford family and especially the Wopat family… Sam you will be missed RIP," wrote Chris.
The Twitter account for Stanford Athletics also posted a message.
"Stanford Athletics sends its prayers and condolences to the family, friends and teammates of Sam Wopat," wrote SU Athletics.