Originally Posted by mikeler
OK, so you got authentic rackets. One bad thing about O-port frames is you are missing chunks of the frame all over. So of course, that has to make it weaker. That being said, I did use a cheap knock off years ago which was the Prince O3 Royal and I don't think I ever broke one of them.
Actually, there is more material, since the ports are molded, not drilled.
I think the main issues is that it's a thin beam that got worn down at a critical place in terms of structural integrity.