4 years ago I wrestled (ground-judo) with a girl I know through a friend, who does judo from a young age. I'm 6'3 and sportive, she was 5"7 and and early teenager so I expected a match to be a bit equal, and friendly. Equal, as I heard that she was a good well trained judoka, but hey, I'm a grown men.
From the beginning she fought aggressively, strong, fast and with very good techniques. After 2 rounds it was already clear that I didn't stand a chance, she was much better/stronger, and I didn't feel comfortable. I became worse when she took me in headlocks and choked me quite hard, and she did some nasty leglocks. I should have asked her to came down but I felt stupid doing so, mainly because of her age. Eventually, I had to because she almost killed (choked) me at times.
I was my worst experience on the mat, I was really scared at times. Besides, i got humiliated, in front of a good friend. Now I can laugh about it, but not at that point!
PS I have some photo's and a video of our match.