Tennis biomechanics affect serve power, groundstroke efficiency, and injury risk. Read movement analysis, technique breakdowns, and expert research protocols here.
Reviewer's note, first person, just this once. Last winter I spent an afternoon with slow-motion phone footage of a 3.5 club player who was convinced his weak forehand came down to a weak body.
Search "trophy position" and you get a wall of nearly identical photographs: a player frozen mid-serve, tossing arm pointing at the ball, racquet arm cocked back like a statue on a tournament trophy.