RIZIN Fighting Federation Light Heavyweight Champion Jiri Prochazka has signed an exclusive UFC contract, per Brett Okamoto of ESPN.

Prochazka is currently riding a 10-fight winning streak, with nine of those coming from the top Japanese MMA promotion RIZIN.

The Czech Republic fighter won the promotion’s Light Heavyweight Championship in April of 2019, stopping Muhammed “King Mo” Lawal in the third round.

He made his first defence of the belt on New Year’s Eve, defeating former-UFC veteran C.B. Dollaway within a round.