Free agent linebacker A.J. Hawk is one of the many celebrities taking part in the American Century Championship golf tournament at Lake Tahoe this weekend, and he's carrying on a tradition that only takes place at this event.

Two years ago, Hawk began the yearly occurrence by tackling a fan on the course. Last year, he did the same. This year, though, the fan took a bit more precaution before getting leveled. He wore a bubble suit of sorts, which cushioned his fall.

It's even better in slow motion, which makes you realize just how hard NFL players hit each other.

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Here was his tackle from 2014...

... And from last year.

The event is all about fun and having a good time, but it just wouldn't be the same without Hawk tackling some guy.