Kyle Williams is a legend. But probably not the kind he wanted to be. After his two fumbles (among other things) cost the Niners Sunday's NFC game, he'll go down (however briefly) as the guy who cost us a shot at the 2012 Super Bowl. Which, whatever. It happens. No big deal, right? Mistakes were made. Wounds will heal. Lessons shall be learned. Hardly the end of the world. Well, not according to one angry fan who took to Twitter to make a death threat not only against Williams, but his wife and family too.

The angry Twitter user writes, "@KyleWilliams_10. I hope you, youre wife, kids and family die, you deserve it."

His account has since been deleted.

As of this morning, Kyle Williams is still trending on Twitter. Luckily, fans have posted defenses of Williams while shunning the aforementioned hater and others like him. As for his role in yesterday's game, Williams said, "I caught the ball, tried to head up field, tried to make a play and it ended up for the worse."