Help! My BF's sexist/wounded ego problem

I think my boyfriend is being really pissy over something I didn't think was a big deal. We were talking the other day about sports we no longer take part in but used to enjoy and I mentioned that I used to do judo in college and was pretty good, even though i only received a beginner's yellow belt.

He thought this was hilarious because I'm tall and blond and weigh around 125lbs, and I guess he didn't think that a pretty girl could fight her way out of a paper bag, much less do a martial art.

So when he got done laughing at me (he really was laughing) I challenged him to a wrestling match. Long story short, I used some timely leg sweeps and wrist throws to send him to the floor a few times, and after a while he got so tired that his strength advantage was gone, and I was able to pin him.

Well, I figured he would have learned his lesson, but he's totally bent out of shape about it...he's been pouty and obnoxious ever since the match and keeps challenging me to a rematch, saying I got lucky, and that he wasn't trying hard...all this stuff to protect his macho ego.

So what do I do? Give him a rematch and let him win? (He would totally rub it in my face and say things like "I told you women can't fight"). Or agree to a rematch and try my best again, risking another blow to his ego if he loses? Or just refuse and tell him to deal with it? (I've tried that last option and he just won't let it go). What would you do? Has anyone out there dealt with something like this? Any help appreciated!