"Jannik is in tremendous form, and he has been the best player for the last couple of years," said Djokovic.
Jannik Sinner booked himself a second consecutive semi-final appearance at Roland Garros on Wednesday with a typically ruthless straight-sets victory over unseeded Kazakh Alexander Bublik.
Top seed Jannik Sinner dismissed world number 34 Jiri Lehecka in straight sets on Saturday at Roland Garros as the Italian booked his place in the fourth round.
Women's second seed and former Roland Garros finalist Coco Gauff also targets a place in the last 32, after 18-year-old contender Mirra Andreeva cruised through.
Alcaraz fended off two set points late in the first set and then seized control in the tie-break before pulling away for a 7-6 (7/5), 6-1 win, his fourth in a row over world number one Sinner.
Carlos Alcaraz won the Italian Open on Sunday after beating rival Jannik Sinner 7-6 (7/5), 6-1 in the final and firing a warning shot for Roland Garros.
Jannik Sinner set up a blockbuster Italian Open final with Carlos Alcaraz by beating Tommy Paul 1-6, 6-0, 6-3 on Friday.
Jannik Sinner came through the first true test of his comeback from a doping ban with Tuesday's straight-sets win over Francisco Cerundolo which took the world number one into the Italian Open quarter-finals.
Sinner accepted a three-month ban in February following an agreement with the World Anti-Doping Agency, which challenged an independent tribunal's decision to clear him of wrongdoing after two positive tests for the anabolic agent clostebol.
"Jannik is in tremendous form, and he has been the best player for the last couple of years," said Djokovic.
Jannik Sinner booked himself a second consecutive semi-final appearance at Roland Garros on Wednesday with a typically ruthless straight-sets victory over unseeded Kazakh Alexander Bublik.
Top seed Jannik Sinner dismissed world number 34 Jiri Lehecka in straight sets on Saturday at Roland Garros as the Italian booked his place in the fourth round.
Women's second seed and former Roland Garros finalist Coco Gauff also targets a place in the last 32, after 18-year-old contender Mirra Andreeva cruised through.
Alcaraz fended off two set points late in the first set and then seized control in the tie-break before pulling away for a 7-6 (7/5), 6-1 win, his fourth in a row over world number one Sinner.
Carlos Alcaraz won the Italian Open on Sunday after beating rival Jannik Sinner 7-6 (7/5), 6-1 in the final and firing a warning shot for Roland Garros.
Jannik Sinner set up a blockbuster Italian Open final with Carlos Alcaraz by beating Tommy Paul 1-6, 6-0, 6-3 on Friday.
Jannik Sinner came through the first true test of his comeback from a doping ban with Tuesday's straight-sets win over Francisco Cerundolo which took the world number one into the Italian Open quarter-finals.
Sinner accepted a three-month ban in February following an agreement with the World Anti-Doping Agency, which challenged an independent tribunal's decision to clear him of wrongdoing after two positive tests for the anabolic agent clostebol.
Carlos Alcaraz said Sunday that the pressure to reclaim the world number one ranking from the suspended Jannik Sinner has had a negative impact on his form this season.
