Serena Williams might be pulling a Tom Brady and Michael Jordan -- the tennis G.O.A.T. is clearing the path for a big return!!
The 44-year-old reportedly popped up on the International Tennis Registered Testing Pool list recently ... a requirement for players who want to compete, including retirees who must apply at least six months before participating in a tournament again.

Caroline Wozniacki did the same thing in 2023.