Ten-pin bowling 5 on their first ball and 3 on their second, the open frame would be worth 8 pins.) The maximum score in ten-pin bowling is 300. This consists of getting 12 strikes in a row in one game (one strike each in frames 1–9, plus all three possible strikes in the tenth frame), and is also known as a perfect game. In 1934, British anthropologist Sir Flinders Petrie, along with a team of archaeologists, discovered various primitive bowling balls, bowling pins and other materials in the grave of a protodynastic Egyptian boy dating to , very shortly before the reign
Ten-pin bowling if synthetic. The top of the pin shall have a uniform arc with a radius of . The USBC also has regulations governing the weight distribution of the pin from top-to-bottom. Pins are allowed one or two "voids" (holes) in the belly area (which can be viewed if the pin is cut in half from top-to-bottom). The voids are needed to balance the narrower top half of the pin with the wider bottom half. Without them, the pins would be too bottom-heavy to fall properly when struck. In addition, a standard regulation pin may lean no more than 10 degrees