In bowling, the order of passing and pitching is first decided by drawing lots. The performance of bowling is determined by the number of bowling pins knocked down. Knock down 1 bottle, calculate 1 minute. The winner is the one who scores more points.
When pitching, the pitcher must stand behind the foul line. Throwing beyond or touching the foul line will be considered invalid. The pitching action must be in the form of rolling, not any other form. After each pitch, you must change to another lane to throw the next ball. After the whole game, change lanes and throw the next game until the end of the sixth inning. Another way to use fairways is to throw the ball all the way to a fairway, and then change lanes from left to right in turn until the end of six games.
According to China's national conditions, it is not realistic to use so many fairways at once. Therefore, bowling competitions usually have two lanes. Bowling competition takes the bureau as the unit, 1 bureau is divided into 10 grids, and each grid has 2 pitching opportunities. But only in the tenth grid, the last grid, throw a perfect ball or a good ball, can you get the third chance to pitch.
Second, what are invalid scores and fouls?
1, invalid score
The following situations are considered as invalid scores:
(1) Throw the ball, slide into the ditch, and pop up to knock down the bowling pin.
② The bowling ball hit the back wall of the cleaning tank and bounced back to knock it down.
③ After the bowling balls are sorted by the bowling cleaning machine, the bowling balls are not placed on the fairway according to the specified number, or the bowling pins are knocked down by the machine when they are placed.
(4) When pitching, any part of the body crosses the foul line, which is regarded as a foul. Count the pitches once, and the result is invalid.
2. No procrastination
Bowlers are not allowed to deliberately delay the game. There is no time limit for the identification of procrastination in bowling competitions. It was only decided by the referee at that time according to the situation. The level of the ruling is: the first time is a warning; The second time was a serious warning; The third time will be punished. The penalty is to rule that the score of this box is zero. The referee's criterion for judging the delay is that when the adjacent fairways on the left and right sides of the player are free, the player never enters the pitching state. But in the competition, we should pay attention to the right channel priority rule.