Tennis player Serena Williams spotted wearing a Audemars Piguet

Serena Williams was photographed studying her wrist while wearing what is immediately recognizable as an Audemars Piguet Royal Oak Offshore Chronograph in stainless steel with a navy blue dial — a configuration that has become one of the most enduring colorways in the Offshore canon. The rubber strap and case proportions are clearly visible against her wrist, placing this squarely within AP's 42mm steel ROO Chronograph family.

The Royal Oak Offshore Chronograph reference 26020ST.OO.D101CR.01 houses AP Calibre 2226/2840, a self-winding column-wheel chronograph movement with a 40-hour power reserve, running at 21,600 vph. The 42mm stainless steel case features the Offshore's signature oversized octagonal bezel secured by eight titanium screws, with a brushed and polished finish that distinguishes it from the smoother Royal Oak. The navy mega tapisserie dial — a denser, bolder version of the original's petit tapisserie — pairs with luminous white Arabic numerals and three contrasting silver subdials at 3, 6, and 9 o'clock.

Launched originally in 1993, the Royal Oak Offshore was designed by Emmanuel Gueit under AP's direction and represented a deliberate break from Gerald Genta's restrained 1972 Royal Oak. It was polarizing at launch — larger, louder, more overtly sporty — but within a decade it had become a cultural cornerstone of luxury sports watchmaking and a fixture on the wrists of athletes and entertainers globally. The navy steel variant occupies the accessible entry point of the Offshore Chronograph range, making it the model most collectors encounter first.

Serena Williams has long maintained a relationship with serious horology. Her choice of the Offshore Chronograph — rather than a more obvious or fashion-forward option — signals genuine engagement with the category. The ROO's athletic, oversized architecture aligns naturally with Williams' own brand identity: technically accomplished, visually dominant, built for performance.

On the secondary market, clean examples of the steel ROO Chronograph in navy consistently trade at or slightly above retail, reflecting steady collector demand and AP's controlled supply. With AP having transitioned the Offshore line through several generational updates, earlier 26020ST references carry modest vintage appeal among Offshore specialists.