Nadal will celebrate his 36th birthday ahead of the start of next season, but Spanish coach Jose Antonio Camacho still believes the veteran defender has a lot to offer.
He played a partial role in qualifying, starting three matches and coming off the bench for one.
But his drop in pace could be held against him when it comes to Camacho picking the starting line-up.
However, what Nadal has, which many of the players around him do not, is previous World Cup experience.
He travelled with the side to the United States in 1994 and France four years later.