Jean Mota scored the winner eight minutes from time as Santos clinched their third win from four matches.
Li then overwhelmed Jiangsu with four kills. Wang Yuanyuan made the set points for Tianjin to level it at 1-1.
"The Club has informed the relevant authorities and the player has been promptly placed in quarantine at home. All other team members and staff have tested negative," it added.
Li made four straight points from three kills and one block to start the second set before Zhang spearheaded Jiangsu to fight back with a 7-0 run.
Saturday ends with Southampton facing a tricky visit to play Burnley. Southampton have lost both league games so far and were dumped out of the Carabao Cup by Brentford, while Burnley lost their only league game away to Leicester City, before bouncing back to beat Milwall in the Carabao Cup. They have a good record against Southampton with four wins and three draws against them since October 2016.
Selby had smashed Ding 5-1 in the quarterfinal before defeating Murphy 6-3 to reach his 27th career ranking final.
Suzhou opened the scoring with a low drive in the penalty area from Nigerian Chris Shimbayev through a corner kick, but it was ruled out for offside. Both sides posed threats to the other, but no goals were scored in the first half.
The fact that the Royal Blues have worn out nine managers in 11 years, at least to some extent, explains David Wagner's hopeless situation. The 48-year-old former Huddersfield manager is the club's 10th incumbent.
Guoan now sits second in Group B with 25 points, with two rounds in the first stage remaining, and has booked a spot in Group C for the championship race.
Selby, 37, began the first stage by beating Fergal O'Brien 3-1 in the four-man group. Then the world number four defeated Brandon Sargeant with the same scoreline before drawing 2-2 with Chinese player Lyu Haotian in the last match.
Although both Li and Wang were substituted in the third set, Tianjin's young players Wang Yizhu and Chen Boya combined for 10 points to sail to the victory.