The world indoor record holder had opened her outdoor season in mid-August at the Wanda Diamond League meeting in Monaco, winning with a jump of 14.27m.
"At the start of the season I was in great shape physically and mentally, I was ready to dominate track but unfortunately COVID-19 slowed me down. With Ostrava meeting opportunity now here, I will give it my best," said Chelangat who still harbors an Olympic Games ambitions next year.
Chelsea director Marina Granovskaia described Havertz as "one of the best players of his age in world football".
In March, the Confederation of African Football (CAF) postponed the 2021 AFCON qualifying matches due to the COVID-19 pandemic.
Williams will take on Bulgaria's Tsvetana Pironkova, who overcame Alize Cornet of France 6-4, 6-7 (5), 6-3 in another round of 16 match.
However, Alfaro, who took charge last month after the resignation of Jordi Cruyff, refuses to accept that Ecuador will be outsiders to secure a berth in the next edition of football's showpiece tournament.
Since the start of the summer transfer window, the London club have added the German duo Werner and Havertz, Morocco's Hakim Ziyech, England's Ben Chilwell and Brazilian veteran Thiago Silva to their squad. Enditem
"I think that lots of people didn't think it was possible to throw a javelin more than 95 meters in a closed stadium. I did it and I think there is a lot space for improvement. Very small differences, tiny differences, can make a difference of many meters." Enditem
In the second minute after kick-off, Rondon scored the opener with his left foot. Rondon extended the lead for Dalian in the 29th minute, as he assisted Marek Hamsik to slot home.
The six-time US Open champion will next face compatriot and 2017 champion Sloane Stephens.
"This is my duty to know my team's weaknesses since I don't want to waste my time," the Croat added.