Valter, 22, broke free during the final few kilometers and the peloton was unable to catch him.
The result lifted Flamengo to fifth in the 20-team standings, five points behind leaders Internacional
"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.
"I was looking to take the jersey on stage six anyway so I'll go in with the same tactic - try to win the stage and see what happens."
The 28-year-old is now 16th in the overall rankings, 16 seconds behind new leader Yates.
Rondon continued to demonstrate his prowess in the second half. In the 48th minute, the Venezuelan striker assisted Swedish winger Sam Larsson to stretch the lead for Dalian.
"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.
World number one Djokovic struck 51 winners to notch up the win against Edmund, extending his unbeaten run this year to 25 matches.
"It was a fantastic evening. The conditions, crowd, competition - it was all fabulous. Sam is a fabulous competitor, and I feel we bring the best out of each other," Duplantis added.
During his career as a shuttler, he became a gold medalist in men's singles at the Atlanta 1996 Olympic Games. He also won two All-England Open Badminton Championships in 1995 and 1996, and the European Badminton Championships in 1992, 1994 and 1996.
Caboclo added that national women's team manager Pia Sundhage was informed of the decision in March.