ITF Technical Skills and Stroke Mechanics 2 — Questions and Answers
Question 1: Which phase of the serve motion is commonly referred to as the 'back-scratch position'?
- The initial stance before the toss
- The trophy position at peak backswing
- The racket drop behind the player's back before the upswing (Correct answer)
- The follow-through after ball contact
Correct answer: The racket drop behind the player's back before the upswing
The back-scratch position describes the moment when the racket drops behind the player's back and the elbow points upward, creating maximum shoulder rotation before the upward swing to contact.
Question 2: What is the primary biomechanical advantage of using a looped backswing on a forehand groundstroke?
- It shortens the swing path to improve accuracy
- It allows more time to prepare at the net
- It generates racket-head speed through momentum built in the loop (Correct answer)
- It keeps the racket face open at contact for slice
Correct answer: It generates racket-head speed through momentum built in the loop
A looped backswing builds racket-head speed through the continuous circular momentum of the swing, allowing players to generate more power with less muscular effort than an abrupt straight backswing.
Question 3: In ITF coaching, what is the key technical difference between a slice backhand and a topspin backhand?
- Slice uses an open racket face moving downward through the ball; topspin uses a closed face moving upward (Correct answer)
- Slice is hit with a Western grip; topspin uses a Continental grip
- Slice requires a two-handed grip; topspin is always hit one-handed
- Slice produces more power than topspin due to a longer follow-through
Correct answer: Slice uses an open racket face moving downward through the ball; topspin uses a closed face moving upward
A slice backhand is produced by swinging with an open racket face downward and through the ball, imparting backspin, while a topspin backhand uses a closed or neutral face moving upward to brush the back of the ball.
Question 4: When coaching a player on the overhead smash, the ITF recommends orienting the body in what way relative to the incoming ball?
- Facing the net squarely to maximize forward momentum
- Sideways to the net with the non-dominant shoulder pointing toward it (Correct answer)
- Facing away from the net to enable a full shoulder turn
- Parallel to the baseline to track the ball more easily
Correct answer: Sideways to the net with the non-dominant shoulder pointing toward it
Turning sideways with the non-dominant shoulder toward the net allows the player to prepare a full shoulder turn, track the ball above and slightly in front of them, and produce maximum power similar to the serve motion.
Question 5: What is the purpose of 'pronation' in the service motion according to ITF technical coaching?
- To slow the racket head down before contact for control
- To rotate the forearm so the racket face moves from edge-on to flat at contact, accelerating racket-head speed (Correct answer)
- To keep the wrist locked and stable through the impact zone
- To assist in generating topspin on a kick serve only
Correct answer: To rotate the forearm so the racket face moves from edge-on to flat at contact, accelerating racket-head speed
Forearm pronation during the serve rotates the racket face from edge-on to flat (or past flat), dramatically accelerating the racket head through the contact zone and is the primary source of speed in the serve.
Question 6: In ITF coaching terminology, what does 'unit turn' refer to in the context of groundstroke preparation?
- The coordinated rotation of the shoulders and hips together to prepare for a groundstroke (Correct answer)
- The pivot step taken with the outside foot to square the stance
- The movement of the elbow away from the body during the backswing
- The synchronized racket and ball-toss preparation for the serve
Correct answer: The coordinated rotation of the shoulders and hips together to prepare for a groundstroke
A unit turn is the simultaneous rotation of both the shoulders and hips as a single unit to prepare for a groundstroke, enabling early racket preparation and improved body rotation through the shot.
Question 7: Which of the following best describes the 'windshield wiper' follow-through on a modern forehand?
- The racket finishes high above the left shoulder for a right-hander
- The racket sweeps across the body from low to high and then rolls over, finishing beside the player's right hip for a right-hander (Correct answer)
- The hitting arm extends straight toward the target at the end of the swing
- The racket wraps around the non-dominant shoulder in a straight line
Correct answer: The racket sweeps across the body from low to high and then rolls over, finishing beside the player's right hip for a right-hander
The windshield wiper follow-through involves the racket brushing steeply upward through contact and then rolling over, finishing beside the dominant hip, which maximizes topspin and helps the player control the ball's trajectory.
ITF Technical Skills and Stroke Mechanics 2
Which phase of the serve motion is commonly referred to as the 'back-scratch position'?