The International Surfing Association (ISA) has announced the alternate athletes for surfing at Tokyo 2020.
11-time world champion Kelly Slater has been confirmed as the first reserve for Team USA.
The American surfing icon will be called up if either of USA's two qualified stars cannot attend the Games.
As previously reported on Olympics.com, two-time world champion John John Florence and Kolohe Andino are in a race against time to be fit for the Games having both recently undergone knee and ankle surgery respectively.
It's understood both surfers are making good progress and should be ready to compete in Tokyo.
They've been keeping their fans updated via social media and also at times rehabilitating together in California.
Quota places for surfing in Tokyo are allocated by name and the reallocation process also entails substitutes meet certain criteria
Andino became the first U.S. surfer ever to qualify for the Olympics and ended the 2019 World Surf League (WSL) as the top-ranked American in the world rankings.
Slater finished behind Florence on the standings board, making him the next athlete in line for Team USA.
While Italy's Leonardo Fioravanti is also waiting on the wings as an alternate.
The quota reallocation process means he is a substitute for multiple surfers as the next highest-ranked surfer from the 2019 WSL rankings.
In the women's competition, Lakey Peterson is the back-up for Carissa Moore and Caroline Marks of the USA, while Nikki Van Dijk is the alternate for Australia's Stephanie Gilmore and Sally Fitzgibbons.
The deadline for communicating the final entries list of participants is 5 July.
See the fill list of Tokyo 2020 surfing alternates here.