Sadly, the child he and his girlfriend were expecting will be born without a father, as Fernandez passed away in a boating accident on Saturday night.
Fernandez, who turned 24 on July 31, was one of three men found deceased after their 32-foot boat struck a jetty off Miami Beach at what's thought to be dangerous speeds. There was reportedly no evidence of drug or alcohol abuse leading up to the accident.
His team canceled their Sunday game against the Atlanta Braves after the news.
"Sadly, the brightest lights are often the ones that extinguish the fastest,'' said Marlins owner Jeffrey Loria in a statement. "Jose left us far too soon, but his memory will endure in all of us. At this difficult time, our prayers are with his mother, grandmother, family and friends.''
"We are devastated by the news that Jose Fernandez has tragically passed," said MLB Players Association executive director Tony Clark. "Jose was a remarkable young man and a tremendously gifted athlete, who at just 24, established himself as one of the game's biggest and brightest stars. Our thoughts and prayers go out to Jose's family, friends, teammates, Miami Marlins organization and legions of fans in the United States and Latin America."
The Rookie of the Year in 2013, in four seasons Fernandez posted a 2.58 ERA with 11.1 strikeouts per nine innings. He leads the majors in strikeouts per nine innings in 2016, with 12.5.
The Marlins will open their series against the New York Mets as planned on Monday.