Joshua and Ruiz Jr are touching down ahead of the Clash on the Dunes in Diriyah, about 20 kilometres (12 miles) from central Riyadh, ahead of their long-awaited rematch.
The heavyweight boxers will go head-to-head on 7 December in the newly-constructed Diriyah Arena, where Joshua is promising to win back the IBF, WBA, and WBO titles, which Andy Ruiz Jr took from him at Madison Square Garden in New York City in June.
Follow Sputnik's live feed to find out more.