Scary moment during a WWE NXT UK match Thursday ... Blair Davenport suffered a gnarly leg injury after she jumped off the top rope and landed on the ground awkwardly.
Davenport was competing against fellow wrestling star Meiko Satomura in a Japanese Street Fight for the NXT UK Women's Championship ... when disaster struck.
During the match, Blair climbed to the top of a ring post, jumped, and then slammed her feet onto the back of Meiko, who was outstretched on the apron.
But, when Davenport hit the ground just after that, you can see in video, her ankle and knee crumpled below her body.