Novak Djokovic moves into his 20th week as world number one on Monday as the clay season gets under way.
The Serb is almost 2,500 points ahead of Rafael Nadal while third-placed Alexander Zverev will hope to pick up points at the Marrakech claycourt event this week when Britain's Kyle Edmund will hope to make moves to regain his place in the top 20.
ATP rankings at April 8 1. Novak Djokovic (SRB) 11,070 pts 2. Rafael Nadal (ESP) 8,725 3. Alexander Zverev (GER) 6,040 4. Roger Federer (SUI) 5,590 5. Dominic Thiem (AUT) 4,765 6. Kei Nishikori (JPN) 4,200 7. Kevin Anderson (RSA) 4,115 8. Stefanos Tsitsipas (GRE) 3,240 9. Juan Martin Del Potro (ARG) 3,225 10. John Isner (USA) 3,085 11. Marin Cilic (CRO) 3,015 12. Karen Khachanov (RUS) 2,810 13. Borna Coric (CRO) 2,345 14. Daniil Medvedev (RUS) 2,295 15. Milos Raonic (CAN) 2,140 16. Marco Cecchinato (ITA) 2,021 17. Nikoloz Basilashvili (GEO) 1,930 18. Fabio Fognini (ITA) 1,885 19. Gael Monfils (FRA) 1,875 20. Denis Shapovalov (CAN) 1,820 Selected 22. Kyle Edmund (GBR) 1,680.