In other matches, Guizhou Hengfeng drew 1-1 with Zhejiang Energy Greentown, and Changchun Yatai edged Heilongjiang Lava Spring 2-1.
Tello's late effort did justice to the score as Betis had twice hit the woodwork earlier in the game through Guido Rodriguez and Sergio Canales.
Madrid claimed last season's title with an impressive run of results in the last 11 games of the season and with coach Zidane Zidane's options improved by returning loanees Martin Odegaard and Alvaro Odriozola (and perhaps Sergio Reguilon), he maintains a balanced squad, despite the likely departure of Gareth Bale and James Rodriguez's move to England, neither of whom contributed much to their title win.
In the 28th minute, Harold Preciado's header was saved by Jianye's goalkeeper Wang Guoming, but Gao Lin knocked on the rebound to extend the lead to 3-0.
Reigning champions Slovan Bratislava managed to overcome its biggest rival Trnava 2-0, and sit six points behind unbeaten Dunajska Streda with one game in hand.
Title favorite Ajax suffered a serious setback after half an hour of play at Sparta Rotterdam. Defender Nicolas Tagliafico got a red card after he tried to stop Mohamed Rayhi, but touched the ball with his hand while sliding.
Xu and Melichar are now both one win away from the first Grand Slam women's doubles title for each of them. Xu was a women's doubles runner-up at Wimbledon in 2019, while Melichar was the runner-up at Wimbledon in 2018. Melichar does have a Grand Slam mixed doubles title, winning that event alongside Alexander Peya of Austria at that same 2018 Wimbledon.
Bach also said the progress in rapid testing and development of a vaccine could be "greatly influential".
In the second set, Siegemund/Zvonareva broke the first service game of their opponents to take an early 2-0 lead. After that, they never looked back. Enditem
Pianigiani admitted that he is very excited to join Beijing Ducks, a club with top influence in Asia. He said he is looking forward to working hard with the team in the next season.
The former Barca striker got a straight red for slapping on the back of Alvaro Gonzalez's head.