If you use your hands to compete in your sport, having greater strength and control might give you the edge you’re looking for. Consider the findings of study on 6 weeks of wrist training published in the Journal of Strength and Conditioning Research.
Subjects were tested before, at 2-week intervals during, and after completing the program. Wrist joints were worked in 6 directions: Flexion, extension, pronation, supination, radial deviation and ulnar deviation. Subjects showed a decrease in motor control errors after 2 weeks of training. Maximum wrist strength increased in all 6 directions after 4 weeks.