John Isner’s Tennis Racquet

John Isner has for over a decade been one of the most consistent players on tour. With his serve that is regarded as one of the best serves in the world, that can literally win tournaments by itself. But with his powerful serve, many ask what racquet he uses to comply with all that power. That’s what we will go through in this article.

What racquet does John Isner Use? John Isner currently plays with the Prince Textreme Warrior 100. He strings his racquet with Tecnifibre Pro Red 16 in the mains and crosses. Isner has used this racquet setup for quite some time now and doesn’t seem to be changing it in the near future.

John Isner’s Racquet Specs

Like you may know, many pros endorse a racquet that looks like the stock version, but in reality, pros play with a totally different racquet. However, this doesn’t seem to be the case with John Isner. He has used the Prince Textreme Warrior 100 for quite some time and after researching his racquet, it seems like it is the racket that he endorses, with some minor customizations.

Prince Textreme Warrior Specs

  • Head Size: 100 sq. in. / 645.16 sq. cm.
  • Length: 27in / 68.58cm
  • Strung Weight: 11.14oz / 315.81g
  • Balance: 12.7in / 32.26cm / 6 pts HL
  • Swing-Weight: 320g
  • String Pattern: 16 Mains / 18 Crosses

John Isner Racquet Customization

There is no reliable source of how John Isner has customized his racquet. But, it’s pretty obvious that he has added a lot of weight to his Textreme Warrior 100. It also looks like he has extended the frame to 27.5. This is just rumors that go around in the tennis world since there is no official source of what exactly Isner has done to his racquet.

John Isner’s Racquet Review

John Isner’s Warrior 100 is perfectly set up to appeal to a big group of players from intermediates through to the more advanced player. At 300g unstrung, the racquet is very manageable weight-wise, and it promises all the things we look for in a modern racket. Maneuverability and spin are key in today’s game and John Isner is certainly using the Warrior 100 to achieve that.


The weight is very manageable and the racquet swings like a dream. It gives you easy access to spin. The upgrade with the Textreme material seems to have made this racket much crisper, and it comes together nicely on the groundstrokes.

It had plenty of power, and you would notice that with very little effort your shots will land very deep in the court.

The response is also great from the baseline. The racquet comes through the ball very smoothly, while it still has enough stability to not get pushed around. An extremely comfortable racquet from the baseline.

The response of this racquet felt great from the baseline. I found easy power and spin. It felt fast, yet it had enough stability to not get pushed around. I was also impressed by the feel. The racquet offered a very comfortable response, and I was surprised at how comfortable it felt even when strung with a poly.


As many other spin-friendly racquets from the back, volleys aren’t doing as well. It feels a little bit too loose at the net, but that is just something more advanced players would notice.

If you are a beginner or even intermediate player, this racquet will feel just like any other racquet at the net. But, for the more advanced players, it may feel a little loose and you won’t feel as comfortable at the net with this racquet.

What have to be mentioned is that the modern game of tennis doesn’t call for us to be at the net a lot, and when we are it’s normally to finish off a point. Which the Extreme Warrior 100 will do for you.

However, if you are thinking about playing doubles with this racquet. I would highly suggest going for another racquet. Since there are a lot of quick exchanges in doubles and Isner’s racquet isn’t suited for that at all.


There’s nothing worse than serving with something that’s hard to get moving. However, this is certainly not the case with this racquet. The Textreme Warrior 100 continues to be a very speedy option when it comes to the serve. If you compare the weight of the racquet, with the amount of power it can achieve, there is not many racquets that can compete with the Textreme Warrior 100.

As you improve and become more confident with this racquet, I would highly suggest adding a little extra weight to the racquet, to access even more power, as John Isner did to his racquet.


I can totally see why Isner still plays with the Textreme Warrior 100. The amount of power that you can achieve with this racquet suits Isner’s playstyle perfectly since most of his game surrounds how much power he serves with. It isn’t the most comfortable racquet at the net, but since John Isner rarely goes for the net, it still makes sense that he uses this racquet.

The racquet is extremely easy to play with and It feels like a beginner racquet, but knowing that a player like Isner plays with this racquet, It’s safe to say that this is a racquet for all levels.

Can You Buy John Isner’s Racquet?

The Prince Extreme Warrior 100 is pretty much available in all tennis stores. It’s one of the more popular racquets for the wide mass, so you would be more likely to find this racquet in your local tennis store, than not doing so. You can check the current price on Amazon here.

Keep in mind that if you want to buy this racquet just because John Isner plays with the racquet. The racquet won’t feel the same as it does for John Isner. Most pros choose a racquet as a “ground” and then customizes it to suit their play style perfectly.

No one knows what customizations John Isner has on his racquet, except himself and his team. But, regardless of the customization, it will play somewhat similarly and it will look exactly like his racquet.

Final Thoughts

John Isner is a powerful player that needs a racquet that allows him to achieve his tremendous serves, and the Extreme Warrior 100 does the job for him. It makes sense why he uses this racquet, it suits players like him that don’t prefer to win points from the back and rarely go for the net.

John Isner has used the Textreme Warrior for quite some time now and it doesn’t seem like he wants to change his setup in the future.

Also Read: All Top 100 Players Racquets (ATP)

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