Wilson Defyer 100UL

100"sq
16x19
9.3oz / 265g
Pre-Order Item
Unstrung
Reviews & Feedback
$289.95
Store Availability (subject to change)
Online Toronto Oakville

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Save $10 each when purchasing multiple
Applies to quantities of 2 or more for regular price at time of purchase. Add to cart to see your discount. Not applicable with any other discounts, offers or orders.
Gift Wrapping Service
Add gift wrapping to this item for $20.00 each.Service available online only. Some items are not available with this service. Option must be selected for each item. Items will be wrapped separately unless otherwise directed in cart page order comments. Wrapping paper varies. Gift-wrapped items have prices masked or removed.
Stringing Service

This racquet comes unstrung from the manufacturer.

Have it strung by our certified stringing team. Customization options will show below. Strung racquets are final sale.
This product ships to Canadian addresses only
Orders are filled in the order they're received.
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Stringing Service Options

Your racquet will be strung for a $25 service fee plus cost of string. Understanding tennis strings
This product ships to Canadian addresses only
Orders are filled in the order they're received.
Description

The Wilson Defyer 100UL is designed for beginners, rising juniors, and recreational players who want the spin-friendly performance of the Defyer series in an ultra-lightweight, easy-to-swing frame. It provides an accessible platform for developing confident, aggressive strokes while remaining comfortable and manoeuvrable.

The 100 square inch head delivers a generous sweet spot that combines forgiveness with easy power, while the open 16x19 string pattern helps players generate heavy spin with minimal effort. At just 265g unstrung with a 4 pts head light balance, the Defyer 100UL is exceptionally quick through the air, making it easy to develop racquet head speed and react quickly from anywhere on the court. Its 303 swingweight keeps the racquet easy to handle, while the 23.75-25-23mm Dual Taper Beam enhances stability and energy transfer for effortless pace. Together, these specifications create a racquet that is forgiving, manoeuvrable, and confidence-inspiring.

The Defyer 100UL incorporates Wilson's latest performance technologies to maximize modern attacking tennis. TORQ Shaft technology improves leverage, stability, and manoeuvrability, helping players generate greater spin while maintaining control. SI3D optimizes the frame's three-dimensional flex profile to balance power, spin, and comfort throughout the stroke. The Dual Taper Beam increases stability while preserving fast handling, and the Airfoil Bumper reduces drag to encourage quicker racquet head speed. Parallel Drilling enlarges the sweet spot and creates a more forgiving string bed response, producing a racquet that feels stable, responsive, and exceptionally easy to swing.

The Defyer 100UL offers the easiest learning curve in the Defyer family, combining lightweight handling with effortless spin and power. It gives developing players the confidence to swing freely, build consistency, and learn an aggressive style of play while enjoying a forgiving, easy-to-use frame.

  • Airfoil Bumper: reduces air resistance around the loop for more efficient, faster swings that increase both power and spin
  • SI3D: Optimizes three-dimensional frame bending for targeted power, spin and control.
  • Torq Shaft: sculpted shafts help deliver leverage, stability and maneuverability for heavy, penetrating shots
  • Parallel Drilling: Grommet construction provides a consistent, more forgiving string bed response while dramatically increasing the sweet spot.
  • Dual Taper Beam: Generates power from its height and mobility from the aerodynamic shape.

Photos used contain images of strings for illustration purposes. Adult tennis racquets are unstrung unless otherwise noted or stringing services have been selected above. Brand logo stencils are not applied by default with stringing services. If you request brand logo stencils, please note that a stencil is painted onto the strings within a brand's stencil and may wear off over time - this is how stencils are applied on tour. Depending on the string you select, the stencil paint application fullness, colour and visibility may vary.

Adult racquets generally do not come with covers. To protect your racquet, we recommend getting a racquet bag.

Product specs such as weight may vary slightly from racquet to racquet to what is advertised due to the manufacturing process.

UPC#

Fit Guide

Adult Racquets Sizing information

Grip Size Length
L0 (4") 4" (4 inches)
L1 (4 1/8") 4 and 1/8" (4.125 inches)
L2 (4 1/4") 4 and 2/8" (4.25 inches)
L3 (4 3/8") 4 and 3/8" (4.375 inches)
L4 (4 1/2") 4 and 4/8" (4.5 inches)
L5 (4 5/8") 4 and 5/8" (4.625 inches)

To determine your grip size without using a racquet, measure from the tip of your ring finger to the major fold crease in your palm. Write down the distance to the nearest 8th of an inch. This is your standard grip size.

Grip size palm measurements for tennis racquets

If you fall somewhere between the measurements, it is recommended to choose the smaller grip size as you can always build the grip size up using an overgrip (for a slight increase) or a grip build-up sleeve (for a half or full size increase). The grip measurements above factor in the pre-installed factory grip.

For more information, please read our article: How To Select Your Grip Size

Specifications
  • Head Size: 100 sq. inches / 645 sq. cm
  • Length: 27 inches / 68.6 cm
  • Weight: 9.3 oz / 265 g unstrung
  • Balance: 4 pts head light / 330mm unstrung
  • Swing Weight: 303 strung
  • Beam width: 23.75-25-23
  • Flex: 65
  • Tension Range: 47-57 lbs / 22-26 kg 
  • String Pattern: 16x19
  • Year Introduced: 2026
  • Style #: WR215611U
Technology
Reviews

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Shipping & Returns

Shipping

Most orders ship within 1–3 business days (up to 5 during peak periods). Free shipping is available on qualifying Canadian orders over $99. Delivery times vary based on location and shipping method. In-store pickup is also available. Merchant of Tennis is not responsible for packages lost or stolen after confirmed delivery. View our full shipping policy for details.

Racquets Returns

Each item has a certain set of prerequisites that must all be met in order to return said item.

The plastic wrap on the racquet/paddle handle and any other protective pieces such as header cards have not been removed.
The tennis, badminton or squash racquet has not been strung.
Tennis, badminton or squash racquets ordered with stringing services added cannot be cancelled/refunded once the racquet has been strung regardless of shipping status.

Regular priced items may be returned within 30 days of ordering for a refund or exchange.

Sale items (discounted less than 40%) may be exchanged or returned for store credit or our gift card within 30 days.

No refunds or exchanges on Clearance Items (discounted 40% or more), strung racquets, water bottles, undergarments, worn or damaged product, opened massage devices and gift cards.

Customers are responsible for shipping fees on return shipments for refund or exchange. Most exchanged shipments can be shipped back to the customer at no extra cost. Return shipping must be a pre-paid, traceable method to ensure safe delivery.

Primary product packaging (e.g. shoe boxes) must be covered and protected during return shipping, otherwise the return may not be accepted.

More conditions may apply: view our full return policy

Description

The Wilson Defyer 100UL is designed for beginners, rising juniors, and recreational players who want the spin-friendly performance of the Defyer series in an ultra-lightweight, easy-to-swing frame. It provides an accessible platform for developing confident, aggressive strokes while remaining comfortable and manoeuvrable.

The 100 square inch head delivers a generous sweet spot that combines forgiveness with easy power, while the open 16x19 string pattern helps players generate heavy spin with minimal effort. At just 265g unstrung with a 4 pts head light balance, the Defyer 100UL is exceptionally quick through the air, making it easy to develop racquet head speed and react quickly from anywhere on the court. Its 303 swingweight keeps the racquet easy to handle, while the 23.75-25-23mm Dual Taper Beam enhances stability and energy transfer for effortless pace. Together, these specifications create a racquet that is forgiving, manoeuvrable, and confidence-inspiring.

The Defyer 100UL incorporates Wilson's latest performance technologies to maximize modern attacking tennis. TORQ Shaft technology improves leverage, stability, and manoeuvrability, helping players generate greater spin while maintaining control. SI3D optimizes the frame's three-dimensional flex profile to balance power, spin, and comfort throughout the stroke. The Dual Taper Beam increases stability while preserving fast handling, and the Airfoil Bumper reduces drag to encourage quicker racquet head speed. Parallel Drilling enlarges the sweet spot and creates a more forgiving string bed response, producing a racquet that feels stable, responsive, and exceptionally easy to swing.

The Defyer 100UL offers the easiest learning curve in the Defyer family, combining lightweight handling with effortless spin and power. It gives developing players the confidence to swing freely, build consistency, and learn an aggressive style of play while enjoying a forgiving, easy-to-use frame.

  • Airfoil Bumper: reduces air resistance around the loop for more efficient, faster swings that increase both power and spin
  • SI3D: Optimizes three-dimensional frame bending for targeted power, spin and control.
  • Torq Shaft: sculpted shafts help deliver leverage, stability and maneuverability for heavy, penetrating shots
  • Parallel Drilling: Grommet construction provides a consistent, more forgiving string bed response while dramatically increasing the sweet spot.
  • Dual Taper Beam: Generates power from its height and mobility from the aerodynamic shape.

Photos used contain images of strings for illustration purposes. Adult tennis racquets are unstrung unless otherwise noted or stringing services have been selected above. Brand logo stencils are not applied by default with stringing services. If you request brand logo stencils, please note that a stencil is painted onto the strings within a brand's stencil and may wear off over time - this is how stencils are applied on tour. Depending on the string you select, the stencil paint application fullness, colour and visibility may vary.

Adult racquets generally do not come with covers. To protect your racquet, we recommend getting a racquet bag.

Product specs such as weight may vary slightly from racquet to racquet to what is advertised due to the manufacturing process.

UPC#

Specifications
  • Head Size: 100 sq. inches / 645 sq. cm
  • Length: 27 inches / 68.6 cm
  • Weight: 9.3 oz / 265 g unstrung
  • Balance: 4 pts head light / 330mm unstrung
  • Swing Weight: 303 strung
  • Beam width: 23.75-25-23
  • Flex: 65
  • Tension Range: 47-57 lbs / 22-26 kg 
  • String Pattern: 16x19
  • Year Introduced: 2026
  • Style #: WR215611U
Technology
Reviews
Fit Guide

Adult Racquets Sizing information

Grip Size Length
L0 (4") 4" (4 inches)
L1 (4 1/8") 4 and 1/8" (4.125 inches)
L2 (4 1/4") 4 and 2/8" (4.25 inches)
L3 (4 3/8") 4 and 3/8" (4.375 inches)
L4 (4 1/2") 4 and 4/8" (4.5 inches)
L5 (4 5/8") 4 and 5/8" (4.625 inches)

To determine your grip size without using a racquet, measure from the tip of your ring finger to the major fold crease in your palm. Write down the distance to the nearest 8th of an inch. This is your standard grip size.

Grip size palm measurements for tennis racquets

If you fall somewhere between the measurements, it is recommended to choose the smaller grip size as you can always build the grip size up using an overgrip (for a slight increase) or a grip build-up sleeve (for a half or full size increase). The grip measurements above factor in the pre-installed factory grip.

For more information, please read our article: How To Select Your Grip Size

Shipping & Returns

Shipping

Most orders ship within 1–3 business days (up to 5 during peak periods). Free shipping is available on qualifying Canadian orders over $99. Delivery times vary based on location and shipping method. In-store pickup is also available. Merchant of Tennis is not responsible for packages lost or stolen after confirmed delivery. View our full shipping policy for details.

Racquets Returns

Each item has a certain set of prerequisites that must all be met in order to return said item.

The plastic wrap on the racquet/paddle handle and any other protective pieces such as header cards have not been removed.
The tennis, badminton or squash racquet has not been strung.
Tennis, badminton or squash racquets ordered with stringing services added cannot be cancelled/refunded once the racquet has been strung regardless of shipping status.

Regular priced items may be returned within 30 days of ordering for a refund or exchange.

Sale items (discounted less than 40%) may be exchanged or returned for store credit or our gift card within 30 days.

No refunds or exchanges on Clearance Items (discounted 40% or more), strung racquets, water bottles, undergarments, worn or damaged product, opened massage devices and gift cards.

Customers are responsible for shipping fees on return shipments for refund or exchange. Most exchanged shipments can be shipped back to the customer at no extra cost. Return shipping must be a pre-paid, traceable method to ensure safe delivery.

Primary product packaging (e.g. shoe boxes) must be covered and protected during return shipping, otherwise the return may not be accepted.

More conditions may apply: view our full return policy

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