"I was really focused each game and each point. Especially against top players, one point can make the difference. So I had to stay very calm and keep going," the world number 50 added.
The total number of coronavirus cases in the United States has surpassed 6 million, with national death toll topping 185,000, according to data compiled by Johns Hopkins University.
Duplantis tried to challenge Sergei Bubka's 26-year-old outdoor record of 6.14 meters, but failed to continue after one unsuccessful attempt at 6.15 meters as darkness set in.
"In the end it got too dark to go for 6.15 meters and I felt it was unsafe to continue any further," said the world silver medalist. "I felt I was in the zone. But you have to be prudent."
"I cannot begin to explain how incredible an opportunity it is to join a club with such an amazing history. I would like to thank everyone at Ajax, I grew up there and I will always have a special bond with the club. I am now ready to take the next step in my career and perform at the highest level and there is no higher standard than Manchester United," said Van de Beek on the Manchester United website.
Before the game, Dalian ranked seventh with six points in the eight-team division, while Henan, also on six points, sat at the bottom by virtue of their inferior goal difference.
PP Sports released a statement on Thursday night, claiming the termination was just a "strategic adjustment".
"I tried to leave last year, but they blocked everything at the last second. It was a project I was excited for but it didn't materialize."
"COVID-19 brought us lot of challenges, which were highlighted in the copyright negotiations. We are regretful to announce the termination with Premier League despite rounds of negotiations," read a statement.
"Prize money and allowances have been equalled for men's and women's football, which means female players will earn the same as the men," Brazilian Football Confederation (CBF) president Rogerio Caboclo said in a virtual news conference.
The 54-year-old Dane announced he has been receiving medical treatment for the condition after being diagnosed some years ago and, with the assistance of doctors, has continued to carry out his duties as BWF president "without limitation," said the world governing body.