Astrox 99 Sapphire Navy (1st Gen)
Model AX-99SN · Kento Momota
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Momota's shadow: Astrox 99 Sapphire Navy
The other 99
The Astrox 99 1st Generation launched in 2018 in Sunshine Orange — Kento Momota's war colour at the height of his dominance. In 2019, Yonex released the Sapphire Navy as a second colorway variant: same frame, same specifications, entirely different emotional register. Where the Orange announced intent, the Navy suggested quiet, inevitable precision.
The 3U to 4U transition
Momota famously switched mid-2019 from the 3U to the 4U version of the Astrox 99, citing fatigue during long matches — a testament to how demanding the extra stiff profile and head-heavy balance were even for the world's best player. The Sapphire Navy was released exactly as that transition was happening, giving it a specific biographical timestamp in the Momota-Yonex timeline: the colorway available when he was redefining how an elite player manages the most powerful racquet in the lineup.
Provenance at a discount
At $338 versus the Sunshine Orange's $550, the Sapphire Navy is a compelling secondary entry for collectors who want 1st Gen Astrox 99 provenance at a more accessible price point. Its scarcity relative to the Orange has grown as both versions age out of active play. The performance floor is identical — only the narrative premium differs.
Deep sapphire blue finish — not navy black. Distinct from the 2nd Gen AX-99 Pro colorways. NAMD shaft designation. ROTATIONAL GENERATOR SYSTEM on frame. Made in Japan. Head-heavy, Extra Stiff. Standard Yonex hologram.
Entry-level position into the Momota 1st Gen collection. Appreciation will trail the Sunshine Orange but track upward as both versions become genuinely scarce.