Sevilla opened the scoring in the 7th minute when Luuk de Jong fired home with his left foot after Barca failed to deal with a corner, but Barca levelled barely a minute later when Jesus Navas was unable to clear Jordi Alba's ball into the area, allowing Coutinho to pick his spot.
Barca issued a communique shortly after the final whistle confirming Alba had "problems in his right hamstring," adding that he would undergo tests on Monday to discover the full extent of the injury.
"Despite only one week, she has improved a lot since we met last time. She is very young, but she has got everything on the court. Last time in Strasbourg, she didn't go into the game so quickly and played not so steadily. But this time, I can feel her confidence has boosted after winning two rounds at a Grand Slam," the former world No. 23 added.
In women's action, Petra Kvitova managed to return to the quarterfinals at Roland Garros for the first time since 2012 after a comfortable 6-2, 6-4 dismissal of China's Zhang Shuai in the opening match on Court Philippe-Chatrier on Monday.
Earlier, Schwartzman knocked out third seed Dominic Thiem in a thrilling marathon battle which lasted over five hours, winning 7-6 (7-1), 5-7, 6-7 (8-6), 7-6 (7-5), 6-2.
New arrival Pedro Rodriguez scored the winner after the break as the Spaniard unleashed a missile into the net with both power and precision.
The goalless draw follows another 0-0 away to newly promoted Huesca in midweek and even though Luis Suarez was in the starting 11 for the second time in four days, he looked to be lacking match-fitness as Atletico produced just two shots on target in the entire 90 minutes.
"The tiebreak was very tense. The tiebreak was where all the money was," said Tsitsipas on court. "I am glad that I played good tennis and I didn't panic. I stayed concentrated, stayed low-key and tried to take it point by point."
Wu Tongtong, who scored a game-high 30 points, helped Shanxi seal the win, while Fang Min pocketed a team-high 17 points for Henan. Enditem
After the restart, Bayern had a perfect start to the second half as Chris Richards' square ball into the area allowed Lewandowski to drill the ball from the edge of the box into the top left corner with 51 minutes played.
Khachanov won the pair's previous encounter in Paris - at 2018 Paris Masters, when the Russian claimed a straight-set win in the final to clinch the biggest title of his career until now.