Li-Ning Tectonic 9 vs Yonex Astrox 99 Pro
Two head-heavy rackets from Li-Ning and Yonex, lined up spec by spec from the makers' published figures. Rows marked in red are where they differ; the notes underneath say what each difference means on court.
Tectonic 9
A head-heavy (305 mm), stiff racket with a 6.6 mm shaft and a 32 lb tension ceiling, built for players who want a hard, high-tension attacking setup. Best for advanced singles players with strong technique.
Full specs →Astrox 99 Pro
A heavy-hitting singles frame for strong players who generate their own racket speed and want maximum steepness on the smash. The extra-stiff shaft punishes slow swings, so it is a poor fit for developing players or fast flat doubles exchanges.
Full specs →Where they differ
- Both are head-heavy frames, so the basic feel on the swing is similar and the differences below are what separate them.
- Yonex Astrox 99 Pro has the stiffer shaft (extra-stiff against stiff). A stiffer shaft gives more control and a faster recovery for players with a quick swing; a softer one stores more energy for players who need help generating pace.
- Weights offered differ: Li-Ning Tectonic 9 comes in 3U / 4U / 5U, Yonex Astrox 99 Pro in 3U / 4U.
- Grip sizes differ too (G5 / G6 versus G5); if you like a thin handle, check the size before buying.
- Li-Ning Tectonic 9 is rated to 32 lbs against 28 lbs for Yonex Astrox 99 Pro. That only matters if you string above the mid-20s; see our string tension guide.
- The materials listed by the makers differ (frame: Graphite (Dynamic Optimum frame) versus HM graphite, Namd graphite, tungsten (Aero+ Box frame); shaft: Carbon fibre, 6.6 mm shaft versus HM graphite, Namd (extra slim shaft)). Material names are marketing terms as much as engineering ones, so treat them as a tie-breaker rather than a reason to choose.
- Li-Ning Tectonic 9 is typically around US$40 cheaper (≈ US$250 against ≈ US$290; prices vary by region).
- Li-Ning Tectonic 9 is the newer design (2022 against 2021).
Balance, flex, weights, grips, tension and materials come from the manufacturers' published specifications; the level, play-style tags and typical prices are our own database fields and are labelled as such. We do not rate rackets we have not measured. Shaft flex and balance are the makers' own categories, so compare them within a brand with more confidence than across brands. Our head-heavy vs head-light guide and string tension guide explain what the categories mean on court.
Specifications side by side
Rows with a red mark are where the two rackets differ. Open in the comparison tool to swap either racket for another.