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 off center without falling. The pins must show the name and mark of the maker, either "USBC Approved" or "BTBA Approved" and appear uniform. The maximum diameter of the ball is and the circumference of the ball must not be more than , and the ball cannot weigh more than 16 pounds (7.26 kg). Generally, the lightest ball available for use is 6 pounds (2.72 kg). The ball must have a smooth surface over its entire circumference except for holes or indentations used for gripping the ball, holes or indentations made to bring the ball back into compliance with weight-distribution