As the match progressed, Joachim Low's men retreated with their narrow lead and kept all their men behind the ball.
The 60-year-old's anniversary might well turn into the most significant challenge the 2014 World Cup-winning coach has ever faced.
"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 2020 Tokyo Olympics was postponed by one year for the first time in Olympic history, and Dubi admitted a lot of work remained between now and the rescheduled summer of 2021 for Tokyo organizers.
Awaiting him in the next round is 20th seed Pablo Carreno Busta of Spain.
The Leverkusen midfielder is said to be going for a medical check this weekend before joining the Blues for 100 million euros. Enditem
Both sides posed threats to the other, but no goals were scored in the first half. Shijiazhuang once got a good chance to score in the 33rd minute when forward Liu Xingyu was clean through on goal but his low volley was easily saved by the keeper.
The bumpy restart might have convinced Loew that he can't entirely rely on his backups like Julian Draxler (Paris) and Julian Brandt (Dortmund). His full-back problem hasn't been solved after picking Robin Gosens (Bergamo) and Thilo Kehrer (Paris).
Though it was clear that Djokovic had not intended to hit the line judge, organizers nevertheless said the Serbian was disqualified in accordance with the rules.
Elsewhere, Fede Valverde will hope to continue his progression and will probably find himself playing more minutes than Luka Modric, while Toni Kroos and Casemiro remain very reliable in central midfield.
CTTA President Liu Guoliang called "it very significant that the ITTF has chosen China as the host to restart competitions after what has been an extremely challenging year for our sport."