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Sports Glossary
Learn the language of your game — answer-first definitions across every SwingVantage sport, each with a real example. Free to explore.
All sportsGolfTennisPickleballPadelBaseballSlow-Pitch SoftballFast-Pitch SoftballCricket Analysis Concepts
20 terms
- BertProA bert is a doubles variant of the erne where a player jumps around the kitchen post from the opposite side of the court, crossing in front of their partner to contact the ball outside the NVZ.Pickleball
- Face-to-PathProFace-to-path is the difference between face angle and club path at impact. It is the single number that determines how much, and which way, the ball curves.Golf
- Fake ATPProA fake ATP is a deceptive shot where the player winds up as if going around the post, drawing the opponent wide, then redirects the ball crosscourt or down the line.Pickleball
- Ground ForceProGround force in golf is the vertical and horizontal force a golfer pushes into the ground during the swing. More effective ground use translates directly into club speed and power.Golf
- Hip-Shoulder SeparationProHip-shoulder separation is the difference in rotation between the hips and the shoulders during the swing. The hips fire first while the shoulders stay back, creating stored torque that whips the bat through.Baseball
- Horizontal BreakProHorizontal break is the lateral movement a pitch generates from spin, measured in inches to the arm side (positive) or glove side (negative).Baseball
- Induced Vertical Break (IVB)ProInduced vertical break is the vertical movement a pitch achieves purely from spin, measured against a hypothetical spinless ball — isolating the Magnus effect from gravity.Baseball
- Kinematic SequenceProThe kinematic sequence is the order in which body segments accelerate and decelerate during the downswing: pelvis → torso → lead arm → clubhead. Each segment slingshots the next for maximum speed.Golf
- Kinetic ChainProThe kinetic chain is the linked sequence of body segments. This means feet, knees, hips, torso, shoulders, arms, wrists, club. This means where each segment transfers and amplifies energy to the next.Golf
- Low PointProLow point is where the clubhead reaches the bottom of its arc through impact. Controlling it — keeping it at or just ahead of the ball with irons — is the basis of pure contact.Golf
- Pressure ShiftProPressure shift is the movement of the center of pressure under the feet — measured by force plates — from trail to lead during the swing. Elite players shift pressure earlier and more decisively than amateurs.Golf
- RA / StiffnessProRA is a racquet's stiffness measured by how much the frame deflects under load. Higher RA (66+) means a stiffer, more powerful but harsher frame; lower RA (under 58) flexes more for feel and arm comfort.Tennis
- Seam-Shifted Wake (SSW)ProSeam-Shifted Wake is an aerodynamic effect where an off-center seam orientation disrupts airflow asymmetrically. This produces movement that cannot be predicted from spin rate or axis alone.Baseball
- SeparationProSeparation in the golf swing is when body segments rotate at different rates at different times. This means most importantly when the hips lead the shoulders at the start of the downswing. This creates torque.Golf
- Spin LoftProSpin loft is the angle between the dynamic loft of the face and the attack angle at impact. It is the primary driver of spin and a key lever for controlling distance and flight.Golf
- SquatProThe squat is a slight downward drop of the body at the start of the downswing, where the golfer loads into the ground before exploding upward through impact.Golf
- SwingweightProSwingweight measures how heavy a racquet feels when swung, accounting for where its mass is distributed. Higher swingweight gives more plow-through and power but is harder to maneuver.Tennis
- Vertical Ground ForceProVertical ground force is the downward-then-upward push a golfer generates against the ground during the downswing, measured on force plates as a multiple of body weight. It is one of the clearest physical contributors to clubhead speed.Golf
- Whiff on Spin vs VelocityProWhiff on spin vs velocity splits a hitter's swing-and-miss rate by pitch category. This means breaking and off-speed pitches versus hard, straight velocity. This means to reveal which specific pitch quality is causing misses rather than treating all whiffs as one problem.Baseball
- X-FactorProThe X-factor is the measured angle between the shoulder and hip turn at the top of the backswing. A large X-factor — typically 40–55° — correlates with higher club speed among tour pro players.Golf
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