The result lifted Flamengo to fifth in the 20-team standings, five points behind leaders Internacional
Valter, 22, broke free during the final few kilometers and the peloton was unable to catch him.
"My team was fantastic during the whole race. Today I felt very good, my legs were really good, until the attack I could ride easily. Also, I was very motivated. Many people supported me along the roads, and I want to thank everyone," Valter said after the race.
"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.
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.
The 23-year-old Dutchman has signed a five-year contract at Old Trafford, with an option to extend by a further year. The transfer fee is 39 million euros (46 million U.S. dollars), which may increase to 44 million euros if certain clauses are met.
"The Premier League confirms that it has today terminated its agreements for Premier League coverage in China with its license in that territory, the Premier League will not be commenting further on the matter at this stage," read a statement.
"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."
Larsen later became president of Badminton Europe in 2010 before being elected BWF president in 2013. He was reelected as BWF president in 2017. Enditem
It was a bizarre way for the Frenchman to lose the jersey which he had kept for three days after winning the stage two.
Garcia looked untouchable in the first set and for much of the second, blasting 30 winners and breaking Pliskova's serve three times en route to the 6-1, 7-6 (2) victory.