Crap... these forums make realize how old and outdated everything I use is... I have an old North Face pack I use, top loading with a drawstring and no zippers to break (except one on the small pocket up top). I've had it fifteen plus years, it's still in great condition despite being used nearly 200+ days a year over the time I've owned it. It has no hydration pack, no fancy back areating design, no much of anything. But it could carry a tennis racket, I'm pretty sure. I do have a courier sack I use on occasion, but that's only three years old...
I'm not even going to look at that newfangled thing.