"It's gutting to have come up short but it was a great final. Both of us scored heavily and both of us made mistakes," Gould told the World Snooker Tour website.
Due to several in-house scandals, the club has lost the support of many of its loyal supporters.
The 22-year-old Croatian center (2.16m) has played NBA basketball for four seasons, the first three of them for the Phoenix Suns that selected him as a fourth overall pick of the 2016 draft.
Yan Yuxiang from Shandong took first place in the men's 200m butterfly in 2:00.18, with Tianjin's Wu Guangshuai and Hunan's Wang Kecheng rounding out the top three.
"We haven't played an official game for a long time, so players were kind of excited, and we transferred a lot of positive energy on the court," Shandong coach Luka Sjekloca noted.
Sunday's last game saw Jarod Bowen score twice as West Ham claimed their first points with a 4-0 win at home to a lackluster Wolverhampton Wanderers. Wolves' striker Raul Jimenez scored a 66th minute own goal and Sebastian Haller bagged the fourth in injury time.
And Ecuador's LDU Quito extended their lead at the top of Group D with a 4-0 rout of Binacional Enditem
According to new UEFA regulations, clubs must name alternative venues when local health authorities implement restrictions affecting travel before and after games.
Rangnick has successfully worked in Gelsenkirchen twice in 2004 and 2011, and since then enjoys high respect among the club's supporters.
The next stage will begin with a two-legged knockout round from October 16. Enditem
Elsewhere, Borussia Monchengladbach are still waiting for their first win of the season as they shared the spoils with Union Berlin following a 1-1 draw.