In the women's pole vault, nobody conquered the height of 4.40 meters because of wet ground. Song Tingting, Niu Chunge and Asian champion Li Ling shared the same height of 4.30m, but Song won the title because she jumped the 4.30m mark in her first attempt.
Angelo Preciado, Gabriel Torres, Jairo Sanchez, and Beder Caicedo piled further misery on their opponents with second-half goals.
"I didn't think I was totally ready for the event, but I was happy that I wasn't affected by others and finally made it," said the veteran Liu.
Nadal, seeded second, lost 6-2, 7-5 to eighth-seeded Schwartzman, who will next play 12th seed Denis Shapovalov of Canada for a spot in the final.
"There was a period where there was an easy answer to what team is the best in the world. Now, that answer is no longer so easy, with Russia able to make a convincing argument, and Germany not far behind," the FIVB's website reported on Tuesday.
Guoan went ahead before the interval as Cedric Bakambu headed home a cross from Augusto. Substitute Alan Douglas scored in the 88th minute to extended Guoan's lead to 3-1, but Hebei's Zhang Chengdong sparked the game into suspense with a powerful shot in the second minute of stoppage.
The 31-year-old had one year left on his previous contract and would have been able to leave for nothing in the summer of June 2021.
The decisive point will be if the reluctant Swiss can set his bunch of youngsters on fire and at the same time close doors at the back.
"Hopefully we will renew our cooperation someday in the future. We are family as always," the club added.
Dortmund remained in full control of proceedings and should have added a sixth goal, but Julian Brandt lacked accuracy in the closing period.
Only Dortmund can spoil Bayern's plans, assumes Lothar Matthaeus. But the German record international quickly added a big if: "If Bayern makes major mistakes."