Tecnifibre
14FI300S5
Any original shipping fees are none refundable.
| 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 |
| 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.
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
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:
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.
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.| 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.
| 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.
![Razor Code 1.25MM/17G Tennis String Blue-Strings-Tecnifibre-39237-DEFAULT-L-1-[Sku]-Tennis Express](http://tennisexpress.com/cdn/shop/files/39237-DEFAULT-L.webp?v=1769461755&width=200)
![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=200)
![Wasabi X 17g Tennis String-Strings-Toroline-WASABIXSET02copy-2-[Sku]-Tennis Express](http://tennisexpress.com/cdn/shop/files/WASABIXSET02copy.webp?v=1769458671&width=200)
![Wasabi 17g Tennis String-Strings-Toroline-WASABISET02copy-3-[Sku]-Tennis Express](http://tennisexpress.com/cdn/shop/files/WASABISET02copy.webp?v=1769457030&width=200)
Unleash your full potential on the court with the Tecnifibre T-Fight 300s 2025 Tennis Racquet. Designed for top competitors and advanced recreational players, this latest edition of the T-Fight series offers the perfect harmony of power and stability.
Weighing in at 300 grams, the T-Fight 300s is a mid-weight version of this versatile racquet series, ensuring exceptional maneuverability and control. What's the difference between the T-Fight 300 and 300s? While the 300 has a 100 sq. in. head, the 300s has a 98 sq. in. head, demanding more accuracy and honing a refined sweet spot. The 300s has a classic 16x19 string pattern, generating incredible spin and depth, giving you the tools to dominate every rally.
Favored by tennis pros like Daniil Medvedev and Iga Swiatek, the T-Fight boasts impeccable weight balance, empowering you to handle fast-paced matches with ease. The Revamped Ergonomy enhances the racquet’s feel, providing a seamless blend of power and precision.
With its sleek, modern cosmetic design, the T-Fight 300s retains its signature white aesthetic while exuding contemporary style. Whether ripping forehands or slicing with finesse, this racquet delivers unmatched performance for players looking to elevate their game.
Features:
-Weight: 300 grams (unstrung)
-Head Size: 98 sq. in.
-String Pattern: 16x19 for optimal spin and control
-Balanced weight distribution for maximum maneuverability
-Revamped Ergonomy for enhanced power and precision
Check out our best tennis racquets HERE!
Overall rating: 4.75 / 5 from 4 reviews.
Review topics: [].
"The racket is great the string job was perfect but unfortunately when I placed my order it was not made clear to me that the item had been backordered and I never received any email confirmation about that or any updates telling me the status of the order I had to call in twice to figure out what was happening with the order and it took several weeks to get the racket which to me would have been fine if you had kept me in the loop but nobody did"
"Replacing a similar ‘21 Vcore 98, this is a nice, precise racquet with ok power, but it immediately needs a few grams of lead weighting at 12:00. Very good accuracy."
"I chose the 300s over the Yonex Ezone 98 Gen8 racquet because of how it matches my swing and playing style. I like how the 300s gives me good feedback on every shot. The racquet's swing weight is a good start if you want make any modifications to the racquet in the future. For me, it's just right at this time coming from a heavier swing weight of my old Yonex Ezone DR100. The smaller 98 sq in of the 300s also gives me better control now that I'm a better player now. The newer Ezone 100 and the T-Fight 300 in comparison, felt more vague but with lots of power. I'd take control over power. The Ezone 98 Gen8 also has good control but felt too muted for me even at my level. I like to feel the ball coming from old school heavier racquet in the past like the Wilson RF97. I play a lot of doubles nowadays and this T-Fight 300s is perfect for it as it is lightning quick at the net. It's also stable at the baseline, but I may add just a couple of grams at the hoop for added stability. Overall, this is a good racquet for intermediate to advance players thought I'm pretty sure even beginners shouldn't have any problems swinging this racquet. It's still fairly lightweight with a manageable swing weight."
"Exactly what I expected from Technifibre, the power, control, and speed. Very satisfied with this purchase."
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