It depends on what sport really...
Most sports depend on your legs and arms,
So most likely a ball and socket joint i.e. your hip and shoulder)
Badminton and Volleyball
sliding joints hinged joints fixed joints
To maximize protection of the brain
Fixed joints are called fixed joints because they are fixed and fused together. The are immovable. Two examples are the ilium (end of pelvic girdle) and the skull.
An example of a fixed joint is the skull
Movement is not possible incase of fixed joints
Fixed joints are formed by the skull bones.
The types of fixed joints are suture joints, gomphosis joints, and synostosis joints. Suture joints are found in the skull, gomphosis joints are where teeth articulate with the jawbone, and synostosis joints are where bones have fused together, such as in the skull bones of infants.
Examples of structures found in a natural environment with fixed joints include tree branches, exoskeletons of insects, and coral reefs. These structures have joints that do not move or have limited movement, providing stability and support for the organisms. Fixed joints are essential for maintaining the overall structure and function of these natural formations.
skull
Examples of fixed joints in the human skeleton include the sutures between the bones of the skull, which are immovable. In contrast, examples of sliding joints include the joints between the carpal bones in the wrist, allowing for limited movement.
The cranium or joints in you pelvis