With the 2-0 lead, Hertha played conservatively after the interval, and Bremen failed to pose a threat to Hertha's well-positioned defense.
The 33-year-old Serb now faces a semifinal against Casper Ruud of Norway, who beat fourth seed Matteo Berrettini of Italy 4-6, 6-3, 7-6 (5).
Bakambu and Augusto helped Beijing grab another score by exchanging their roles in the 46th minute. Bakambu converted a header with the assist of Augusto to make it 2-1.
New Betis coach Manuel Pellegrini made his presence felt as his side defended much better than they did last season in their 1-0 win away to Alaves last week, while Valladolid were slightly unlucky to only draw 1-1 at home with Real Sociedad.
With Li Shenglong's header in the 75th minute, Shanghai SIPG beat Chongqing Lifan 3-2.
Guo Liqin, Cao's coach, has been teaching students aerobics since 2000. Last semester, she and her students were forced to train online by using an app called Ding Talk.
While the Munich side is making every effort to mention as many serious rivals as possible, nearly all of the first tier's coaches name Bayern as the big favorite.
Bayern said they want to avoid the 28-year-old to leave after his current contract expires after the next season. The Austrian could go for free but still needs to find a club complying with his demands.
An unpleasant battle of words between the Austrian internationals management and family and Bayern is causing an uncomfortable atmosphere.
The region's premier club tournament, the Copa Libertadores, was due to resume on Tuesday, having been suspended in mid-March.
The fact that the tie was decided with just one leg, rather than the traditional home and away format, meant the game was a potential banana skin for the Chinese-owned team making its first ever appearance in Europe, but Diego Martinez's side got off to a perfect start with two goals in 10 minutes.