XIOM · Sigma · Inverted
SIGMA 4
A medium Sigma with a higher arc and more dwell than Sigma 5.
TTDNA ratings
Physical characteristics
Playing characteristics
Variants and configurations
6 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 · 1.8 mm
Standard · Sponged · Hard (TTDNA band)
Speed 77 · Spin 86 · Control 91
Red · 2.0 mm
Standard · Sponged · Hard (TTDNA band)
Speed 80 · Spin 88 · Control 89
Red · MAX
Standard · Sponged · Hard (TTDNA band)
Speed 83 · Spin 89 · Control 86
Black · 1.8 mm
Standard · Sponged · Hard (TTDNA band)
Speed 77 · Spin 86 · Control 91
Black · 2.0 mm
Standard · Sponged · Hard (TTDNA band)
Speed 80 · Spin 88 · Control 89
Black · MAX
Standard · Sponged · Hard (TTDNA band)
Speed 83 · Spin 89 · Control 86
Known users
No public report for this exact sheet. Shown: contracted XIOM athletes — model use not confirmed.