Dortmund pressed forward but had to wait until the 31st minute before the good build-up work and pass into the box from Giovanni Reyna allowed Haaland to break the deadlock with a hammer from close range.
Elche and Huesca drew a game between two newly promoted sides 0-0, although Huesca will feel they did enough to take all three points as Elche failed to shoot on target all game.
"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."
In women's actions, top seed Simona Halep took sweet revenge on her opponent from last year's French Open defeat, trouncing American teenager Amanda Anisimova 6-0, 6-1 to progress.
"But now after the restart and our return to swimming, we can show the spirit of the Chinese people and our swimming fans to other fans across the country, and even to the whole world," said Zhu.
Jiangsu played a more aggressive game in Tuesday's faceoff with Shanghai, which had led the championship group before the third round. In the 70th minute, Wu Chengshu received a pass from the left side and rifled an effort into the net, helping Jiangsu gain a 1-0 lead.
Saturday ended with Newcastle United winning 3-1 at home over Burnley thanks to an excellent display from winger Allan Saint-Maximin and two goals from Callum Wilson. Enditem
Hao joined Guangzhou Evergrande for study under world-class coach Marcello Lippi after managing the Chinese women's national team from 2012 to 2015. He was appointed the executive coach of the Chinese Olympic men's team, but his side failed in pursuit of a ticket to the Tokyo Olympics.
It was also the 96th victory at Roland Garros for the Spaniard, who is seeking a 20th Grand Slam title to equal Roger Federer's record.
The three competitions will be staged in a 'bubble' which can provide the maximum safety for players and officials.
Esteban Burgos scored from the penalty spot for Eibar after 28 minutes, only for Toni Villa to equalize for the home team eight minutes later. Marco Dmitrovic then saved a penalty, and even though Pape Diop was sent off for the second time this season with 18 minutes remaining, before Rodrigues' later header gave Eibar three vital points in injury time.