Benoit was best known is his time as a professional wrestler. During his 22-year career, Benoit worked for numerous promotions including the World Wrestling Federation/World Wrestling Entertainment (WWF/WWE), World Championship Wrestling (WCW), Extreme Championship Wrestling (ECW), and New Japan Pro-Wrestling (NJPW). Benoit held 22 championships between WWF/WWE, WCW, NJPW, and ECW. He was a two-time world champion, having been a one-time WCW World Heavyweight Champion, and a one-time World Heavyweight Champion in WWE. Benoit was the twelfth WWE Triple Crown Champion and seventh WCW Triple Crown Champion, and the second of four men in history to achieve both the WWE and WCW Triple Crown Championships. He was also the 2004 Royal Rumble winner, joining Shawn Michaels as the only two men to win a Royal Rumble as the number one entrant. Benoit headlined multiple pay-per-views for WWE, including a victory in the World Heavyweight Championship main event match of WrestleMania XX in 2004.
In a double-murder and suicide, Benoit murdered his wife on June 22, 2007, his son on June 23, 2007, and hanged himself on June 24, 2007. Research suggests depression and chronic traumatic encephalopathy (CTE), a condition of brain damage, from numerous concussions are likely contributing factors leading to the crimes