Top men's seeds Novak Djokovic and Rafael Nadal, and top women's seed Simona Halep will kick off their campaigns on Wednesday.
Liverpool visit Chelsea on Sunday after starting the new Premier League season with a 4-3 victory over newly-promoted Leeds United last Saturday. Enditem
To be the first to win the national double a third consecuitive time in the league's history might be a driving thought for the titleholder.
The withdrawal of Osaka meant that two of the current world's top three women's players would not play at Roland Garros this year, as reigning champion and world No. 1 Ashleigh Barty already announced earlier this month that she would not be able to participate the clay major due to the COVID-19 pandemic.
Kuopio's Nigerian striker Aniekpeno Udoh got in front of Bratislava's goalkeeper Greif and had no trouble scoring from close range after a low pass from the right side.
There were also seven goals in the game between the newly-promoted pair of Leeds United and Fulham, with Leeds winning 4-3 to claim their first points of the season.
In Group D, Al-Nassr FC of Saudi Arabia continued their charge towards the round of 16 with a 2-0 win over Iran's Sepahan thanks to a brace from Abderazzaq Hamdallah.
The 20-year-old Duplantis, who set the world record of 6.18m on the World Indoor Tour in February, secured his victory after clearing 5.85m with his second attempt. He went on to clear 6.00m and finally conquered 6.15m with his second effort of the day.
"It is a good start to the Bundesliga season but most importantly, we won today. I am of course delighted that I was able to help my team with a goal," Hertha defender Pekarik said.
From the kickoff, the "BVB" assumed control and implemented their offensively minded strategy while the Foals lurked for their chances on the counter.
Top seed Djokovic labored for two hours to win 6-3, 4-6, 6-3 against German qualifier Dominik Koepfer.