Karen Khachanov was the first athlete to play with the prototype Wilson Defyer at the tour level.
Wilson
When Karen Khachanov won Halle in 2025 using a Wilson prototype racket, it was the only frame like it he had. It was early days for Wilson crafting a new racket and Khachanov’s run with the blacked-out frame had people taking notice of what turned out to be a precursor to this month’s launch of the Wilson Defyer.
“It was driven by a tour insight, to be quite frank,” David Packowitz, senior global product line manager for performance tennis at Wilson, tells me about the rapid movement between early 2025 idea to July 2026 Defyer release, a fresh Wilson focus on spin and power. “In this case our muse and our focus was we need a racket that is going to work with the tour players, so we started with them. From the first test we did, it became about let’s test and get this in their hands as quick as possible. It hit on a need.”
Before the project launched, Wilson identified tour-level insights that drove the project. It was created for a player dubbed the “challenger”—an existing or aspiring elite player looking for success at the next level, whether a top-100 player looking to break through the top 80 or a player in the top 20 wanting to reach the top 10—willing to use equipment to bridge that gap. “These types of players were looking for a powerful spin racket they just couldn’t find in our family,” Packowitz says. Additionally, as court conditions have slowed and players have gotten more powerful, players now look to equipment to improve, even if just 1%. “The Defyer,” Packowitz says, “was the perfect storm for us to go out and do that.”
The new Wilson Defyer racket is designed for powerful spin.
Wilson
Michael Schaeffer, global product director of racket sports at Wilson, tells me the project really embraced players willing to shed the status quo of never wanting to change rackets. “The mindset of the ‘challenger’ tour play is one looking for any area they can improve and more and more they are looking at equipment,” he says. “We kind of feel like in this moment in tennis, where the core of the equipment players use is changing rapidly, it is a really exciting time to be in racket development. We are not in this stale market. Things are continually evolving and there is a lot of excitement.”
Technology Defines The Defyer
New Torq Shaft technology defines the Defyer. “The shaft creates stability and power, and the hoop can deflect and release spin and lateral bending,” Packowtiz says. The shaft tapers from thick lower near the handle to thinner as it moves up, delivering stability and centering power in the heart of the racket. A long handle also allows players with a two-handed backhand to get more leverage on the ball. Players who load up forehands by placing their off hand on the throat now get an octagonal shape to match the handle. Packowitz says tour players have told him the design and technology give them confidence from first strike, a certain “authority at pickup,” as he calls it.
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The Defyer launches with a 98 Pro and three weights of the Defyer 100. The 98-suare-inch head on the Pro version is 305 grams unstrung in a 16×20 string pattern and is nine points headlight. The three 100-square-inch versions all feature a 16×19 string pattern for more access to spin with power. The 100 comes in at 300 grams, still at nine points headlight, for what Packowitz calls a “wonderful maneuverable spec for someone who wants to generate tons of spin.” The 100L drops to 285 grams and the 100UL is 265.
The shape of the throat sets apart the Wilson Defyer.
Wilson
The 100s feature taller beams than the 98 at 12 o’clock and 3 o’clock that then taper. That width creates more power. All the frames feature an airfoil bumper for improved aerodynamics.
Packowitz says that not all players require the same amount of lateral bending and the 98 has less. “Someone playing the 98 is typically taking bigger cuts,” he says. “The 100 gives more [bending] for more spin generation. It is very in line with developing a racket that delivers powerful spin.”
Schaeffer says that most of the tour-level players are using the 98 Pro, but Maria Sakkari and Janice Tjen, both WTA top-50 players, have opted for the Defyer 100. As more players start playtesting the Defyer, he expects to see additional athletes opting for both the 98 Pro and the 100.
Tour-Level Development
It’s not normal for Wilson to go from project start to retail in about 18 months. Engineers treated the racket design like a motorsports project with a focus on max RPMs, aerodynamics and other traits that trace to F1. “We truly see ourselves as the best pit crew and engineering team in tennis,” Packowitz says. “It gave us a north star for a clear direction. It was a lot of fun.”
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The speed of the project came thanks to early success. Engineers received insight for the project at the beginning of 2025 and had the first prototype ready in spring 2025. Khachanov, who was amid frame testing, received a sample. “We call him the first man on the moon,” Packowitz says about being the first pro player to use the racket. “He had an amazing experience.”
Holger Rune is the latest athlete to switch to Wilson, choosing the Defyer.
Wilson
Khachanov took that lone racket to Halle. “I felt confident with this racket from the first moment I used it,” Khachanov says. “It was great to be part of the development process, and the final version exceeds all of my expectations.”
Khachanov’s immediate connection proved Wilson was on the right track early in the process and not far from a final version. “Normally we give more time, but sometimes we get it right right away,” Schaeffer says. “We are working with the best athletes in the world, and they give us the goal line of when we are close to being done.”
With the engineering ahead of schedule, players started bringing blacked-out prototypes to tournaments, even if creating hype wasn’t the aim. “The goal was we need to focus on building a powerful spin racket for the best players in the world,” Packowitz says. “The tennis world noticing was completely extra. We developed something special with a true insight in mind. It is so rare to get it right in the first couple goes.”
Moise Kouame gave the racket recent limelight. Even before his breakout run at Roland Garros, Kouame won three straight futures tournaments after switching to the Defyer. “Not only were we solving problems for current tour players, but [it was great] to see this truly is the racket for the next generation of players,” Schaeffer says. During Wimbledon, British wild card Arthur Fery has ridden the blacked-out Defyer into the seminal.
The Wilson Defyer tennis racket.
Wilson
Holger Rune is the latest to switch. “I was instantly drawn to this racket when I first started playtesting with Wilson,” Rune says. “They have been supportive of my recovery, and I can’t wait to compete with Defyer when I hit the court.”
Tour players will now start playing with the final retail cosmetic—the July 9 presale in the United States and Canada has the racket shipping July 23 for the 98 Pro and Aug. 21 for the 100s—of a bold “adrenalin red” colorway.
“We knew this was going to be the racket that defined the future of tennis and future of our brand,” Packowitz says. “Red means spin, read means speed, red means max performance. Red is Wilson and red is Defyer. It is so fitting. We are Wilson, we are red, it runs in our blood. We are super excited to have a racket be out there to define tennis for our brand.”