But he tightened up again when it came time to serve for the championship, allowing Thiem to break back.
Bremen took the reins from the starting whistle but had to wait until the 18th minute for their first opportunity when Theodor Gebre Selassie rattled the left post from five meters.
In contrast to Real Madrid, FC Barcelona have had a nightmare summer when all the problems came home to roost at the same time after their 8-2 thrashing to Bayern Munich highlighted their failure to renovate the squad adequately over recent years.
Aside from the 'big-three,' Europa League Champions, Sevilla look to be the main title alternative in Spain. European success was redemption for coach Julen Lopetegui after his struggles at Real Madrid and although Reguilon's loan from Real Madrid has ended, Sevilla have moved well in the transfer market to bring back Ivan Rakitic from Barca and sign midfielder Oscar Rodriguez, who impressed at Leganes.
All the participants need to take epidemic prevention and control measures when they are entering the football pitches, such as disinfecting their hands and receiving body temperature checks. However, the epidemic has been brought under control in Guizhou.
Alfa Romeo's Kimi Raikkonen rounded out the top ten after an eventful race in which he also received a five-second penalty for a pit-lane infringement.
Zverev, 23, was in top form in the first set as he displayed an impressive serve and volley game to triumph 6-2 in just 30 minutes.
Evergrande had a good opportunity just four minutes into the game but Ai Kesen hit chance off target.
Brighton coach Graham Potter earned praise for his style of football and Adam Lallana's arrival from Liverpool should add guile in midfield, while Crystal Palace remain in the safe but unspectacular hands of Roy Hodgson and their future could depend on what happens with want-away striker Wilfred Zaha.
Ai Kesen (2nd L) of Guangzhou Evergrande vies with Zheng Zheng (1st L) of Shandong Luneng during the 11th round match between Guangzhou Evergrande and Shandong Luneng at the postponed 2020 season Chinese Football Association Super League (CSL) Dalian Division in Dalian, northeast China's Liaoning Province, Sept. 13, 2020. (Xinhua/Pan Yulong)
"The communication during a match, the way you prepare for a match, how you do tactics, all that, it just fits really well," Siegemund continued. "That's something that you realize down the road."