Djokovic has now pulled out of the Madrid Open three times in four years.
Top seed Swiatek, the 2022 and 2023 champion at the German clay-court tournament, saw off former US Open champion Raducanu 7-6 (7/2), 6-3.
The 22-time Grand Slam title winner, back on court this week after three months on the sidelines, battled well but eventually crumbled against the hard-working world number 11 from Australia.
The 22-time Grand Slam champion had not played a competitive match since January but eased past the 62nd-ranked Cobolli in 85 minutes to reach the second round.
The 12th-ranked Greek, who will return to top 10 on Monday, also won the title in the principality in 2021 and 2022.
"First training... with the hope of being here these days before the start of the tournament. I'm here to see how it goes... with the desire to try to play," wrote Nadal on social media, alongside a picture of the Spaniard sitting courtside with his rackets.
Rafa Nadal's withdrawal from the Monte Carlo Masters has cast doubt over the 22-times Grand Slam champion's participation at the French Open, but Novak Djokovic said he is still hoping for a final chapter in their storied rivalry.
"Unfortunately I have to tell you that I am not going to be playing in Monte Carlo. My body simply won't allow me," said the battle-weary Spaniard on social media.
Jannik Sinner said he is enjoying every moment of his sensational start to the 2024 season after winning the Miami Open on Sunday for his third title of the year.
Djokovic has now pulled out of the Madrid Open three times in four years.
Top seed Swiatek, the 2022 and 2023 champion at the German clay-court tournament, saw off former US Open champion Raducanu 7-6 (7/2), 6-3.
The 22-time Grand Slam title winner, back on court this week after three months on the sidelines, battled well but eventually crumbled against the hard-working world number 11 from Australia.
The 22-time Grand Slam champion had not played a competitive match since January but eased past the 62nd-ranked Cobolli in 85 minutes to reach the second round.
The 12th-ranked Greek, who will return to top 10 on Monday, also won the title in the principality in 2021 and 2022.
"First training... with the hope of being here these days before the start of the tournament. I'm here to see how it goes... with the desire to try to play," wrote Nadal on social media, alongside a picture of the Spaniard sitting courtside with his rackets.
Rafa Nadal's withdrawal from the Monte Carlo Masters has cast doubt over the 22-times Grand Slam champion's participation at the French Open, but Novak Djokovic said he is still hoping for a final chapter in their storied rivalry.
"Unfortunately I have to tell you that I am not going to be playing in Monte Carlo. My body simply won't allow me," said the battle-weary Spaniard on social media.
Jannik Sinner said he is enjoying every moment of his sensational start to the 2024 season after winning the Miami Open on Sunday for his third title of the year.
Novak Djokovic and Goran Ivanisevic are to go their separate ways, the tennis world number one announced on Wednesday, ending a five-year association which yielded 12 Grand Slams.