Butterfly Rozena vs Nittaku Hammond Z2: Which Should You Buy?

UltraSpin comparison · 2026-06-11 · rubber

Butterfly RozenaNittaku Hammond Z2
Our rating8.4/108.8/10
best_sidebothforehand
controlhigh7.5
speed13.0/149.0
spin10.8/129.5
sponge_hardness~35°52
typetensor inverted (Spring Sponge)inverted
weight_uncut_g6770

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Butterfly Rozena and Nittaku Hammond Z2 operate at opposite ends of the difficulty spectrum. Rozena excels at fault tolerance and consistency, making it ideal for intermediate players building skills across all shot types. Its Spring Sponge feel is soft and confidence-inspiring, reducing spin sensitivity and encouraging variation.

Hammond Z2 is a hard, unforgiving rubber designed for advanced players who use active, well-timed strokes. It delivers exceptional looping and counterlooping power, with above-average durability for an ESN tensor. Made in Japan rather than in Germany, it has a distinctive character. The catch: passive contact or poor timing leads to errors, and the transition from softer rubbers is jarring.

Choose Rozena for steady development and broad shot tolerance. Pick Hammond Z2 only if you have solid technique and plan to lead your game with aggressive loops and active blocks.

FAQ

Which rubber has better spin?

Hammond Z2 rates 9.5 spin versus Rozena’s 10.8-12, but Hammond delivers more dangerous active looping power for advanced players.

Is Hammond Z2 forgiving?

No. It demands active, well-timed strokes and punishes passive contact. It is not suitable for intermediate players or those transitioning from softer rubbers.

Which is more durable?

Hammond Z2 has above-average durability for a typical ESN tensor. Rozena is also durable as a Butterfly tensor but depends on playing style.

Which blade type pairs best with each?

Rozena suits most blade types. Hammond Z2 is better suited to OFF-minus or flexible blades; it struggles with stiff carbon setups.

What are the skill requirements?

Rozena develops consistency for intermediate players. Hammond Z2 requires upper-intermediate to advanced skills and active, aggressive stroke execution.