Nike
Adidas
Asics
K-Swiss
New Balance
On
Wilson
Babolat
Head
Nike
Wilson
K-Swiss
Babolat
Nike
Asics
K-Swiss
New Balance
On
Wilson
Babolat
Head
Lacoste
Tecnifibre
Wilson
Penguin
Diadora
Lucky in Love
Lacoste
On
Tail
Sofibella
Lija
Girl's Lucky in Love
Fila
Lacoste
Tecnifibre
Tennis Express
Yonex
Dunlop
Tecnifibre
Solinco
Mizuno
Volkl
Mizuno Demos
Volkl Demos
Yonex Demos
Volkl
Ame & Lulu
CourtLife
Dunlop
Geau Sport
Glove It
Solinco
Trelle and Co.
Gamma
Penn
Tretorn
Adidas
Dunlop
Gamma
Head
Lucky in Love
Tennis Express
Tourna
Jannik Sinner
Carlos Alcaraz
Novak Djokovic
Alexander Zverev
Ben Shelton
Daniil Medvedev
Tommy Paul
Casper Ruud
Lorenzo Musetti
Rafael Jodar
Aryna Sabalenka
Elena Rybakina
Iga Swiatek
Coco Gauff
Jessica Pegula
Mirra Andreeva
Amanda Anisimova
Elina Svitolina
Victoria Mboko
Karolina Muchova
CRBN
RPM
Engage
Gearbox
Holbrook
Joola
Paddletek
Selkirk
Franklin Sports
Gamma
Nox
Onix
Selkirk
Vulcan
Acacia Sports
Diadora
Reebok
Wilson
DEFYER 100UL v1 Tennis Racquet
This item is on pre-order. Estimated Ship Date 8/23/26
WR215611U
U26
FREE SHIPPING ON ORDERS OVER $50 (before taxes)
- Valid in the 48 Contiguous U.S. only. Limited time offer. Applies to In-Stock items.
- Order must have an actual or dimensional weight of 7 pounds or less.
- Offer not valid on oversized or heavy items (cases of balls, can of balls, demo racquets, etc.).
- Not Valid on drop ship items like stringing machines and ball machines.
- Orders do Not ship or deliver on Saturday, Sunday or select Holidays.
- Most Orders placed by 3pm CST will be shipped that day.
-
Any original shipping fees are none refundable.
- Customers will be contacted via email or telephone with order issues or shipping delays.
- Please provide contact information where you can be reached quickly.
- Not responsible for weather-related delays.
FREE RETURN SHIPPING WHEN $50+ ORDER VALUE MAINTAINED
- Please CLICK HERE for information about returns.
| From | To | Standard Ground* | 2Day | Next Day | |
|---|---|---|---|---|---|
| $0.00 | $49.99 | = | $5.95 | $15.95 | $29.95 |
| $50.00 | $149.99 | = | Free | $15.95 | $34.95 |
| $150.00 | $199.99 | = | Free | $19.95 | $39.95 |
| $200.00 | $9,999.99 | = | Free | $19.95 | $39.95 |
Alaska, Hawaii, Puerto Rico, Guam, US Virgin Islands, APO Addresses
| From | To | USPS Priority* | |
|---|---|---|---|
| $0.00 | $99.99 | = | $19.95 |
| $100.00 | $199.99 | = | $39.95 |
| $200.00 | $9,999.99 | = | $49.95 |
Orders being shipped outside of the Contiguous US or APO addresses will ship by means of the United States Postal Service (USPS) and in some cases FedEx.
**Shipping via USPS Priority provides minimal tracking information and normally delivers within 5-7 business days.
*** Any shipping promotions offered by Tennis Express DOES NOT apply to shipments outside of the contiguous 48 states.
**** Excludes tennis balls, court equipment, stringing machines, ball machines and all oversized items.
Canada, Mexico, and other International Orders
At this time, Tennis Express only ships to the United States and all US Territories including Puerto Rico, US Virgin Islands, Guam and military bases. Due to manufacturer restrictions, we are unable to ship to countries outside of the United States.
Return Policy
Tennis Express believes in providing our customers with the best selection of tennis products and innovative game improvement gear. If the products are not to your liking, please take comfort in knowing you can return or exchange unused products within 30 days of the delivery date. Used or worn product is ineligible for a Refund. However, Tennis Express may issue a partial store credit for product returned in a used or worn condition. Credit is at the discretion of Tennis Express based on the amount of wear and use on the product. Store credits expire after 90 days.
How to Return
Submit a return request by visiting Return Portal.
1. Log in with your order number and email.
2. If your order has more than one item, select the items that you want to return.
3. Select the item condition and reason for return. Optionally add any comments.
4. Save and continue to return options.
Once your return request is approved, you'll receive an email with a label or QR code for your FedEx return label and shipping instructions. After the product is returned, you receive a refund.
To qualify for a FREE prepaid FedEx Ground return label:
* Your order must be over $50 (before tax and any shipping fees).
* After your return, the value of what you keep must still be over $50 (before tax and any shipping fees).
* Limit 1 free return label per order.
* Valid only for the continental United States.
Example: You place a $75 order and return a $30 item. Your remaining total is $45, which is under $50, so this order does NOT qualify for free return shipping.
If your order does not qualify for free return shipping, you can still use our return portal for a flat $6.95 fee, which will be deducted from your refund. Otherwise, you're responsible for shipping items back to us, so please hold onto your tracking information.
Please note:
* If you use one of our prepaid labels, you may drop the shipment off at any authorized FedEx or USPS Service Station.
* Refunds will be processed within 3-5 business days from the day we receive the return.
* Any original shipping fees are non-refundable.
* Any store credit issued will expire within 90 days.
QUESTIONS: If you have any questions about our return process, please contact us before shipping back your return: [email protected]
Apparel Returns and Exchanges
* Apparel must be unworn, unwashed, and unused with original tags attached.
* For safety concerns, we cannot accept used or washed clothing.
* Accessories must be unworn, unwashed, and unused with original tags attached.
* Apparel items carry NO warranty from the manufacturer.
Shoe Returns and Exchanges
* Shoes must be in NEW and unworn condition with original product packaging.
* DO NOT use the original shoe box as the outer shipping box. This will ruin the product.
* Accessories must be unworn, unwashed, and unused with original tags attached.
* For shoe outsole warranty claims, please visit our Shoe Warranty page.
Final Sale Notice: All Clearance Shoes and Apparel are Final Sale and not eligible for returns or exchanges.
Racquet and Paddle Returns and Exchanges
* Racquets or Paddles must be in NEW and unused condition with original plastic covering the handle intact.
* Make sure any racquets or paddles are protected to safely endure shipment.
* For racquets strung at Tennis Express, the cost of the string will not be refunded.
* All sales are final on the purchase of used racquets.
* For racquet warranty claims, please visit our Racquet Warranty webpage.
Drop Ship Returns
* Items shipped directly from the manufacturer must be returned to the manufacturer within 30 days of the original delivery date.
* You must request a Return Authorization (RA) from Tennis Express prior to shipping. Please email [email protected] with your return request.
* Drop shipped items must be in new and unused condition with original product packaging.
* Any restocking fees or return shipping costs will be paid for by the customer.
Damages and Issues
Please inspect your order upon reception and contact us immediately if the item is defective or damaged, or if you receive the wrong item, so that we can evaluate the issue and make it right.
Unfortunately, we cannot accept returns on gift cards.
Last Updated 05/07/26
Our 7 Day Price Match Guarantee
This Price Match Guarantee may be requested at time of purchase by contacting one of our friendly team members at 713-435-4800 ext. 1 or email [email protected]
At Tennis Express we have a Price Match Guarantee so you can shop with confidence. We will gladly match any advertised price, in print or online, by an AUTHORIZED retailer for the exact item that you have purchased within the past 7 days.
Conditions of Price Match Guarantee:
- Price must be published and verified on Authorized Retailer website by Tennis Express (competitor coupons and/or one-time discounts do not qualify).
- Item must be identical brand name/make/model/size/color, and specifications.
- The item must be in stock at time of Price Match Guarantee.
- Valid up to 7-days from date of purchase.
- Price Match cannot be combined with any other promotions or coupons.
- One request per item purchased.
- Direct sales from manufacture, third-party sellers, or auction websites are exempt from this guarantee.
- Shipping and delivery fees are not eligible for Price Matching.
- Products subject to MAP policy (which are restrictions established by select manufacturers such as Babolat, Wilson, Yonex, Head, Volkl, Dunlop, Adidas, Nike, and others) do not qualify.
Eligible price adjustments will be made upon request to the original form of payment or issued as a Tennis Express e-gift card.
Tennis Express reserves the right to approve authorized retailers.
Other Exclusions:
Clearance, final sales, damaged, used, open packages, refurbished, pre-owned, or closeout products.
Recommended Strings
Choosing The Right Strings
String Types
Natural Gut
This premium tennis string offers unmatched tension maintenance and feel, suitable for all players. Made from serosa fibers, it’s expensive but highly effective. While once sensitive to weather, modern coatings have improved its durability. No other string matches natural gut for tension and power.Multifilament
Made from nylon filaments bound with polyurethane, offer more power and comfort than solid-core strings. They mimic natural gut's performance at a lower cost, making them ideal for players with sensitive arms and elbows, though they lose tension faster compared to natural gut.Monofilament
Made from a single extruded material, they are durable but offer less power and comfort than other strings. Co-polyester monofilaments are slightly softer, providing control and spin for players with fast swings. Preferred by intermediate and advanced players, they lose tension faster than other string types.Synthetic Gut
Synthetic gut strings, made from nylon with a solid core and outer filaments, offer affordable, all-around performance. They balance tension maintenance with improved feel and are suitable for players of various levels.Hybrid
Hybrid stringing combines two different types or gauges of string in one racquet, often mixing stiff polyester with softer synthetic or natural gut. This blend improves comfort and playability while maintaining durability and spin, making it popular for extending string life.Choosing The Right Gauge Strength
| String Gauge | Elasticity | Durability | Spin | Feel | Comfort |
| Thinner | More | Less | More | More | More |
| Thicker | Less | More | Less | Less | Less |
This is the diameter of the string, commonly expressed in millimeters and/or gauge numbers (the higher the gauge number, the thinner the string, and vice versa). Thinner strings tend to provide more power, feel and spin potential than a larger diameter string of the same type, although the thicker string will provide more control and durability.
Choosing The Right Tension
| String Tension | Power | Control | Durability | Feel | Comfort |
| Lower | More | Less | Less | More | More |
| Higher | Less | More | More | Less | Less |
String tension is crucial for racquet playability, typically ranging from 40-70 pounds (18-32 kilograms). The recommended tension range is usually indicated near the racquet's throat. Higher tension offers more control but less power, while lower tension provides more power with less feel and control. Starting in the middle of this range is ideal. Strings lose tension rapidly after installation, often by 10% within 24 hours, reducing elasticity and requiring more player-generated power. To maintain optimal performance, restring your racquet regularly—at least every six months or as many times per year as you play per week.
Choose My Own Strings
![Synthetic Gut Tennis String-Strings-Head-97435-DEFAULT-L_92604989-7371-450a-a8f5-39a875f05663-1-[Sku]-Tennis Express](http://tennisexpress.com/cdn/shop/files/97435-DEFAULT-L_92604989-7371-450a-a8f5-39a875f05663.webp?v=1770549135&width=20)
Order Summary
Choose Your Hybrid Strings
Prepackaged Hybrid Strings
![O-TORO 17g Tennis String-Strings-Toroline-O-TOROSET_1_copy-2-[Sku]-Tennis Express](http://tennisexpress.com/cdn/shop/files/O-TOROSET_1_copy.webp?v=1769461121&width=20)
![Super Toro 17g Tennis String-Strings-Toroline-SUPERTOROSET02copy-2-[Sku]-Tennis Express](http://tennisexpress.com/cdn/shop/files/SUPERTOROSET02copy.webp?v=1769457881&width=20)
Choose My Mains Choose My Crosses
Choose My Mains Choose My Crosses
Order Summary
Complement Your Order
Product Review
Description
Maximum spin. Minimum effort.
The Wilson Defyer 100UL Tennis Racquet is built for players who need a fast, effortless frame to generate heavy topspin and keep shots precise under pressure. At just 9.3 oz. unstrung with a 100 sq. in. head and 16x19 string pattern, it's the lightest frame in the Defyer line and the easiest to swing fast, making it ideal for juniors, seniors, or any player looking to add spin without adding effort.
The Torq Shaft's sculpted, tapered design delivers leverage and stability through every stroke, so even a compact swing produces heavy, penetrating spin. The Airfoil Bumper cuts drag to push head speed even further, while Parallel Drilling keeps the string bed consistent and forgiving across the full face. The DirectConnect carbon fiber handle ties it all together with clean ball feel and torsional stability on every shot.
Torq Shaft: Sculpted shafts generate leverage and stability for heavy groundstrokes, with an ergonomic outside shaft designed for two-handed loading.
Airfoil Bumper + Parallel Drilling: Engineered airfoil design reduces drag for faster head speed, paired with a forgiving string bed and expanded sweet spot.
DirectConnect Handle + Click & Go: Carbon fiber handle connects directly to the end cap for improved torsional stability, ball feel, and quick bumper replacement.
| Head Size: | 100 sq. in |
|---|---|
| Length: | 27 inches |
| Weight: | Strung - 9.9 oz / 281 g Unstrung - 9.3 oz / 265 g |
| Balance: | 1 Point Head Light |
| Beam Width: | 23.75/25/23mm |
| Composition: | High Performance Carbon Fiber |
| Flex: | 66 |
| Grip Type: | Pro Performance |
| String Pattern: |
16 Mains / 19 Crosses Mains Skip: 8T, 8H Two Piece No Shared Holes |
| String tension max: | 57 |
| String tension min: | 47 |
| String tension recommended: | 52 |
| Swing weight: | 307 |
![You Got Served Unisex Tennis Tee White-Apparel-TENNIS EXPRESS-TESERVED18-1-1-[Sku]-Tennis Express](http://tennisexpress.com/cdn/shop/files/TESERVED18-1.webp?v=1769458091&width=20)
