Former Chicago White Sox pitcher Francisco Barrios dies of heart attack in his native Mexico at the age of 28. Barrios was 14-7 for Chicago in 1977, despite recurring shoulder trouble.

On April 9, 1982 — Former Chicago White Sox pitcher Francisco Barrios dies of heart attack in his native Mexico at the age of 28. Barrios was 14-7 for Chicago in 1977, despite recurring shoulder trouble.

Source
Baseball Reference April 9