The 24-year-old Fernandez was one of three people killed in the early morning accident.
"The Miami Marlins organization is devastated by the tragic loss of Jose Fernandez," a team statement said. "Our thoughts and prayers are with his family at this very difficult time."
Fernandez posted a photo of his girlfriend sporting a "baby bump" on his Instagram page last week, announcing that the couple were expecting their first child.
"I'm so glad you came into my life," Fernandez wrote in that post. "I'm ready for where this journey is gonna take us together."
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