Madrid (EFE) which tied seven days ago.
Djokovic, who this week will return to competition for the first time in Dubai after winning the Australian Open, reigns with 6,980 points, compared to 6,780 for Spanish Carlos Alcaraz, who lost the final in Rio this Sunday with leg problems.
The Murcian would have tied on points with Djokovic if he had won the Brazilian tournament, but he lost to the British Cameron Norrie, whom he had beaten a week earlier in the final in Buenos Aires.
Nadal drops to eighth place
The Greek Stefanos Tsitsipas and the Norwegian Casper Ruud maintain the third and fourth positions, but the ranking is readjusted in the following places, with the rise of the American Taylor Fritz from seventh to fifth, the fall of the Russian Andrey Rublev from fifth to sixth, the improvement of also Russian Daniil Medvedev from eighth to seventh and the fall of Spanish Rafael Nadal, injured since the Australian Open, from sixth to eighth.
The Canadian Felix Auger-Aliassime and the Danish Holger Rune keep the ninth and tenth steps.
Argentine Franciso Cerúdolo, ranked 32nd, is the best Ibero-American player in the ranking, followed by his compatriots Sebastián Baez, 35; Diego Schwartzman, 37; Federico Coria, 58; Pedro Cachin, 61; and Tomás Martin Etcheverry, 76; the Peruvian Juan Pablo Varillas, 77; Colombian Daniel Galán, 83; the Brazilian Thiago Monteiro, 84; Chilean Nicolás Jarry, semifinalist in Rio and who has gained 52 positions, up to 87; Ecuadorian Emilio Gómez, 90; the Argentine Facundo Bagnis, 94; the Bolivian Hugo Dellien, 96, fifteen positions better than the previous week; and the Chilean Christian Garín, 100.