"With 53 points you cannot win any game," admitted Shanghai coach Milos Paden.
The Red Bulls fired American coach Chris Armas last month and South African Bradley Carnell took over as interim coach.
The Greek star will compete for a quarterfinal place with No. 18 seed Grigor Dimitrov. Enditem
But Wu was reluctant to highlight her own performance.
Eibar has just one point from four games and Jose Luis Mendilibar's team travels to Real Valladolid after seven days which has seen them lose home games to Athletic Bilbao and newly-promoted Elche.
"I feel that physical contention is not at the same level. The opponents played tough on both ends. As for the game experience, I'm not at the same level with teammates and opponents either," she noted.
Dongguan scored 10 points in a row early in the first quarter, before Zhejiang responded with the same scoring run through consecutive layups and foul shots, leading 20-17 at the end of the quarter.
Those to have been ruled out of the matches include forwards Juan Carlos Arce, Gilbert Alvarez and Victor Abrego, midfielders Erwin Saavedra and Leonel Justiniano, and defenders Adrian Jusino, Luis Haquin and Diego Bejarano.
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.
Eibar won for the first time this season as Kevin Rodrigues' 91st minute goal gave it a 2-1 triumph away at Valladolid in a frantic game on Saturday.
With 3:04 left on the clock of the third period, Fujian kept chasing the score-line and trailed by 57-66, but Zhejiang reclaimed a double-digit advantage through Dong Ke'er's three-pointer.