The scores from all judges are added together in each run to determine the total score, and the total score from the first and second runs are added together for the final score.
Judges use a 10-point system. They give scores of ones and tenths, from .1 to 10.
Five judges determine the score for each run. One judge is responsible for standard airs, one for rotations, one for amplitude and two for overall impression. Each judge gives a separate score for a total of 50 points. The judging is a system of checks and balances so no one individual has more weight or power, which means athletes must perform well in each category.
Standard airs are all maneuvers that are without rotation, including aerials with and without grabs, tricks on or near the lip of the halfpipe and handplants with less than 360 degrees rotation. Judges pay close attention to the variety, difficulty and execution of tricks.
Rotations are all maneuvers that involve rotations, including spins, flips, hybrids (combinations that include both horizontal and vertical rotations), and handplants and liptricks greater than 360 degrees rotation. Judges consider the variety, difficulty and execution of tricks.
Amplitude is the energy of the run as demonstrated by the height of the maneuvers. Judges consider the distance measured from the lip of the pipe to the competitor's center of mass.
Overall impression is the run's overall precision, including the execution of the run and the routine attempted. The overall impression judges evaluate the sequence of tricks, the amount of risk in the routine and how the rider uses the pipe. They can take falls into consideration and deduct up to 10 percent of the run.
The athlete with the highest overall impression score in a tied single run is declared the winner. If the overall impression score is the same, then the individual scores for each judging category are compared. The rider with the greatest number of higher scores is declared the winner. If all of these components result in a tie, then the rider with the highest amplitude score is the winner.
PARALLEL GIANT SLALOM
Competitions consist of a qualifying and head-to-head portion. All riders complete one run in the qualifying round, and the top 16 men and women move on to the next portion. The winners keep advancing to the next round until they are eliminated or win a medal.
The competitor who wins both of the two runs advances. If both athletes win a run, the person with the fastest total time advances. If a tie occurs, another run is held.
Athletes may touch the gates, as long as their board clears the gate without going through it. If competitors miss a gate, they must go back and complete the gate, or they will be disqualified. Falling is not grounds for disqualification.