Steven Bergwijn scored the game's only goal in the 61st minute, firing in from close range. After breaking the deadlock, Dwight Lodeweges's team controlled the game at the Johan Cruyff Arena in Amsterdam, restricting Poland to just one shot on target.
Ruichang remains at second in the overall standings despite the win, while four-time CBSL champion Qingdao still leads the table.
Slovenia now rank second behind Greece in Group C3, both having four points. The next games will be played in October against Kosovo and Moldova. Enditem
The reigning champions visited Sweden with their captain Ronaldo back in the squad after the 35-year-old Juventus forward missed their opening Nations League match due to a toe problem three days earlier.
Damjan Bohar scored the only goal for Slovenia in the 28th minute.
"I wanted to go, and I was in my right to do so, because my contract said I was free. I wanted to go because I was thinking about being happy in my last years in football," he commented.
Shenzhen will also face another huge loss in the clash with defending champions since Mary got a red card and was sent off the pitch in the stoppage time due to his aggressive language to Shanghai head coach Choi Kang-Hee.
"The final climb wasn't too hard, it was difficult to make a gap there, and therefore attacking would have been a huge effort for a small gain. So we rode steady to save energy for the coming days," Yates said.
Coates said the Games will start as planned on July 23 "with or without COVID-19," stressing the Olympics has never been cancelled outside of world wars.
"Right now I'm really focused on the US Open, and nothing else I can think about right now," said Williams, who won six of her 23 Grand Slam singles titles at the US Open.
The Chinese Football Association (CFA) has introduced measures to deal with agents that disrupt the transfer order. Agents who break the regulation could receive a life-time ban from football activities.