I will have 4. Rafael Nadal (Spa)

Leaving

2. Novak Djokovic (Ser)
3. Stan Wawrinka (Swi)
6. Milos Raonic (Can)
7. Dominic Thiem (AUT)
8. Marin Cilic (Cro)
9. Kei Nishikori (Jpn)