article_snippet.sent: The first-degree murder conviction sealed the downfall of an athlete who once had a $40million contract and a standout career .
article_snippet.sent: The former football pro was also found guilty on firearm and ammunition charges.
highlights_snippet.sent: Athlete once had a $40million contract and a standout career ahead of Athlete .
  
highlights_snippet.sent: The former American football pro was also found guilty on firearm and ammunition charges .