I would think golf club epoxy would work and can easily be purchased at many online retailers. I'd mention them here but they also sell tennis. I couldn't imagine tennis being any harsher than golf in terms of impact. Aside from that, there are many 2-part epoxies sold at hardware stores today that should also do the trick. Many are rated over 5000lbs and I'd have to guess it would hold.
Having repaired my share of golf clubs, heat is an issue if you leave them in a car in direct sunlight.
Back to using POGs. Why did I ever leave you dear friend?