Gore turned 39 on Saturday and celebrated by knocking out Yaya Olorunsola in his pro boxing debut.
The five-time Pro Bowl running back dropped Olorunsola in the fourth round with a vicious right hook.
Check out the clip:
The former San Francisco 49ers star lost to Deron Williams via split decision in an exhibition bout on the undercard of the Jake Paul-Tyron Woodley show on Dec. 18.
It was not his best fight but it looks like he bounce back very well. Here is the clip vs Williams back in December