Butterfly Tenergy 19 vs Yasaka Rakza Z: Which Should You Buy?

UltraSpin comparison · 2026-06-10 · rubber

Butterfly Tenergy 19Yasaka Rakza Z
Our rating8.7/108.6/10
best_sideforehandforehand
controlhigh — extended dwell time provides greater margin for error than other Tenergy variantshigh
speed132medium
spin117extreme
sponge_hardness36 degrees (approx 48 degrees ESN)50 degrees (medium-hard; Extra Hard version around 57 degrees)
typeinverted / pimples-in tensorhybrid tacky tensor
weight_uncut_gapprox 49 g72

We may earn a commission from links on this page. Learn more.

Tenergy 19 offers moderate speed with extended dwell time and balanced spin-to-control ratio suited to varied topspin loops and mid-distance play. Yasaka Rakza Z is an exceptional tacky rubber that prioritizes extreme spin on loops, backspin openings and serves; it has a hard sponge and high throw that require full committed strokes. Rakza Z is slower at less-than-full power and weak on flat hitting or chopping, whereas Tenergy 19 handles multiple shot types well. Rakza Z is heavy and can cause arm fatigue on carbon blades; Tenergy 19 is significantly lighter and more versatile. Rakza Z suits proactive forehand loopers; Tenergy 19 suits players wanting versatile spin and control.

FAQ

Which rubber has more extreme spin?

Rakza Z. Its tacky topsheet and hard sponge generate exceptional, low-slip spin that rivals or beats Tenergy 19 in pure spin output.

Which rubber is better for aggressive forehand loopers?

Rakza Z, if you swing fully and commit to each stroke. Tenergy 19 is better if you want spin without demanding full commitment.

Can I block and flat-hit with Rakza Z?

Rakza Z weak at flat hitting and mediocre at blocking because the high throw and hard sponge need full power. Tenergy 19 excels at blocks and varied shots.

Which rubber is lighter and easier on the arm?

Tenergy 19 at 49g uncut is much lighter. Rakza Z at 72g is heavy and may cause fatigue, especially on carbon blades.