What is the maximum deduction for under rotation on a salto during the post flight phase?

The maximum deduction for under rotation on a salto during the post flight phase is 0.1. This deduction reflects the importance of proper execution and landing mechanics in gymnastics. When a gymnast performs a salto, they are expected to land with their feet in a fully upright position. If the gymnast does not achieve this position upon landing, it is considered under rotation, which signifies that they did not complete the required amount of rotation before touching the ground.

The deduction of 0.1 is applied because under rotation can significantly affect the overall quality and amplitude of the skill, which are critical aspects that judges evaluate. A deduction of this magnitude is appropriate to highlight the importance of skills being executed to their fullest potential while still allowing a certain degree of leniency for minor errors.