Neutral rendering of the topsheet type. Not a product photograph and not a reproduction of manufacturer packaging.
Yasaka
Cobalt
Short pips · Standard ball · Spongeless (OX) hardness
ActiveJapan currentOX only
Also listed as: Yasaka Cobalt
TTDNA ratings
Speed52
Spin26
Control89
Power50
Grip20
Tackiness0
Arc26
Catapult42
Throw angle30
Elastic47
Spin sensitivity18
Short game77
Blocking76
Backhand flip50
Counterloop48
Opening loop39
Chop73
Serve38
Service receive83
Difficulty40
Beginner friendly66
Durability79
Specifications
- Category
- Short pips
- Series
- Standalone
- Ball type
- Standard ball
- Hardness
- Spongeless (OX)
- Thickness
- OX
- Made in
- Japan
- Colours
- red · black
- Technologies
- One-sheet short pips
Availability
- Market
- Japan current
- Status
- Active
- Official scale
- Yasaka Japan · Mark V = 10 scale
- EU list price
- €32.90
- Data checked
- 31 July 2026
Variants and configurations
2 variantsColour, thickness and configuration are variants of one model — never separate products. Colour never changes a rating, MAX and OX stay qualitative labels, and OX carries no sponge hardness.
red · OX
Standard · No sponge (OX) · Topsheet only
Speed 10.0 · Spin 10.0 · Control 10.0
black · OX
Standard · No sponge (OX) · Topsheet only
Speed 10.0 · Spin 10.0 · Control 10.0
Known users
Hana MatelováMattias FalckJon PerssonElias Ranefur
No public report for this exact sheet. Shown: contracted Yasaka athletes — model use not confirmed.