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Yonex Ezone DR 98 racquet review

(2018 update: added quick EZONE 98 comparison below)

I did quite enjoy hitting with the Ai 98, so have really been looking forward to try its successor. Let's jump right into it:

Specs

Length: 69 cm (measured on demo)
Frame width: 23 / 24 / 19 mm (Yonex)
Head size: 98 in² / 632 cm² (Yonex)
String pattern: 16 x 19
Strung weight: 325 g (measured on demo)
Strung balance: 322 mm (measured)
Swing weight: 324 (TW)

 Yonex Ezone DR 98 racquet for review

Thoughts on specs

Classic unstrung weight / balance combo of 310 grams / 310 mm. Otherwise harmonic package of head size, string pattern, and frame width (though the max part @ 24 mm starts to get a bit thick for a player's stick). Note the extra ~0.4 cm in length compared to the standard 68.58 cm.

Playing impressions

Not a flimsy racquet, nicely weighted and pretty stable. Frame is quite powerful. String bed is on the denser side, but still produced OK spin. Enjoyed the extra bit of length.

Benchmarking

Had a little bit of a plank-like feel similar to the Wilson SixOne's, though obviously not as hefty. Little surprised about that given the pretty whippy specs. The Yonex Tour F 97 specs are almost identical, however that racquet zips through the air noticeably faster, but is less powerful and has a denser string bed.

2018 update: the new version, EZONE 98, has become a tad lighter (5 grams) and a tad less headlight (5 mm). When I tried it, it felt less planky, a bit more whippy, and more comfortable. While the DR98 nicely bordered on being a player's racquet (maybe except for the 24 mm part of the frame), the EZONE I played moved another step away from that, most of all because it felt less stable. So between the 2, it depends on what you're looking for.

Here's a visual that indicates where the DR 98 fits into the current spectrum:



Recommendations

Player type: Good modern all-court racquet, probably geared towards aggressive baseliners. Should work well for both long or short swings.

String: Would probably put a control oriented, grippy poly in there, strung at around 24 kgs / 52 lbs. Maybe something like the Tour Bite or Black Code 4S. Hybrid should work well too, would put poly in the mains - a) for spin, and b) since the frame is already quite powerful.

Closing thoughts

Really nice racquet that'll work for a lot of players, subjectively one of the 5 most interesting ones currently on the market. Unless you'd like any of the specs much different, it's definitely worth a demo. Gotta have to like or at least get along with the Yonex head shape though.

To get a better idea how this (or any other racquet) compares to what's on the market today, check out the racquet spectrum.

2016 string comparison

Taking the last string related post a step further, here's a comparison between some strings I consider interesting in 2016. Again, I made the highest value for each string property a 1, and the lowest a 0. Now we can somewhat easily see how they compare to each other:

(Click image to enlarge)

Interesting tennis strings in 2016, benchmarked by main properties

Takeaways:

The Babolat RPM Blast is pretty stiff, gives back a decent amount of energy, but doesn't do its name justice in terms of spin potential. Might be due for an update after almost 4 years on the market?

WeissCANNON's new Ultra Cable very much opens up the spin potential spectrum, making previous "spin monsters" like the Tour Bite or Cyclone look pretty average on paper. Based on my impressions it seems a bit spinnier, but not as much as the numbers suggests. It does eat up a bunch of power on impact. In general, I'm also starting to wonder at what point there are diminishing returns in terms of adding more RPMs to the ball...

The Tecnifibre Black Code 4S looks like a great all-round string on paper. I liked the original Black Code back in 2009. There's a short-term review here - felt pretty stiff, and gave me decent but not crazy spin. Tour Bite and Cyclone still seem grippier to me.

The Gamma Motos have received great reviews, which the numbers here seem to validate. In my tests, I haven't been able to dial in the tension yet. They seemed to lack power - when strung somewhat tightly they were all about control, and when strung somewhat loosely it was tough to get shots past the service line. Will give each Moto another shot though.

Solinco's Tour Bite appears to be noticeable softer in 1.20 than in 1.25, and should deliver a tad more spin too. I've played the 1.25 for a while but ended up finding it too firm in my RF 97 - so the 1.20 might be an alternative after all. UPDATE: comparison here.

The Völkl Cyclone looks like a great all-around string and still plays like one. My subjective findings regarding the Cyclone Tour are confirmed in the numbers: it felt very comfortable, but swallowing most of my built-up momentum on impact. The spin rating seems off - it definitely did not appear more spin-friendly to me than the standard Cyclone or the Tour Bite.

I've played Kirschbaum's red Pro Line II for a while, and found that color to be as soft as licorice (vs. the black one). So assuming Tennis Warehouse measured the black one here, ending up with a relatively high stiffness measure. Both definitely lack a bit of ball bite for me, for example causing my second serve to sail just a bit long.

Loved a loosely strung Silverstring to counter the stiffness of the Wilson BLX Tour 90 for a while, but was also looking for a bit more more ball grab there. In this group, it marks the low end of the spin spectrum, it however is relatively soft and bouncy. Now I'm quite excited about experimenting with the Black 5 Edge, which should also provide a good bit more power.

The classic Luxilon Alu Power is still somewhat low powered, paired with a low spin rating. It might still be an option if you hit out hard and flat like DelPo, and see your string as a tool to keep your shots in the court.

The now popular (and expensive) 4G marks the high end of stiffness and energy return, but also with low no spin potential due to little ball grip. I didn't include the 4G Rough here since the spin potential rating isn't much higher either. So that string is really about crushing the ball, which Serena seems to like - as Wilson likes to point out :)

So that's a bit of an overview for you. Personally, I'll stick with the orange Cyclone for match play, while experimenting with the Black 5 Edge, the Moto Soft, and the Black Code 4S in practice.

Thanks again to TW for publishing their string performance database. I again chose a reference tension of 51 lbs. You can find definitions of the properties here.

Tecnifibre Black Code 4S review

Gauge: 1.25mm / 17

Tension: 21/20 kgs (~46 / 44 lbs) for clay court at moderate temperature, via Wise Tension Head, slowest speed, constant pull

Racquet: Wilson Pro Staff RF97 Autograph

Estimated number of ball contacts to date: 750



Stringing: String feels quite soft, not as edgy as the Dunlop Black Widow, somewhat similar to the WEISSCannon Black5Edge, not as soft as the red Kirschbaum Pro Line II.

Playing: Stiffer than expected after the stringing experience. String did settle in after a couple of weeks on the racquet, making it a bit softer. Good ball grip, but not too crazy. Subjectively less spin production than the Tour Bite or Cyclone, but more than the RPM Blast. 

Personal takeaway: In the current setup still too stiff for me. Will stick with the orange Cyclone for now, and might give the 4S another try @ 20/19 kgs sometime. 

General recommendation: Might do well in a powerful frame, such as the Babolat Pure Drive or the Yonex Ai or DR series, strung in the low 20 kgs / high 40 lbs. A dampener should take some of that stiffness away. Do note that you pay a ~50% premium over the Cyclone, which may be offset to some extend by better tension maintenance. 

Related: Comparison including benchmarking of interesting strings (from 2016, but still seems relevant in 2018 as I haven't seen a real step change yet!)