Hi J.J.
I've had seizures of different kinds since i was 12. My epilepsy is hereditary. I started with petite mals (which I think is what you are getting), and now have Grand-mals (I did have them in sets at some point, but now have realized they are linked to my hormones. At 45 years old, you could be having this also.. Men have hormones too, although not the same as women.
Keep a log of your seizures and who, what, where, when, ect. Note the foods you eat, and the times your seizures occur. Many people with epilepsy will have trouble with certain times of the year (for me it's November) and note when the stress is the highest. If it is during your racketball, I get those same things after a heavy workout, but I am able to control myself. I have to stop what I'm doing for a moment, but then my brian catches up to my body and all's well again. This will help your Dr.'s greatly.
I also recommend (which I cannot legally do, since I'm not a Dr.) that you curve your appetite for sugars, stress, and racketball for a while and see if this makes a difference. If the only thing you have to do is play once in a while, or not at all, is it worth it to have seizures? I also took up YOGA and it helps A LOT.