It means they top their pool and go straight to the second knock-out round at the Katara Cultural Village with the other pool winners.

Second and third place teams will play in the first knock-out round tomorrow.

The Brazilians began by beating Swiss duo Adrian Heidrich and Mirco Gerson 21-17, 24-26, 15-13 and followed up with a 24-22, 19-21, 15-13 victory over the 2018 Doha gold medallists Alexander Brouwer and Robert Meeuwsen of The Netherlands.

"Brouwer and Meeuwsen are a great team and it is always hard to play against them," Solberg said.

"So it is amazing for me and Vitor to start with two wins in our first day, especially with a huge victory against a great team."

Solberg and Felipe have only been together a matter of weeks after their former partners, Bruno Schmidt and Evandro Goncalves, teamed up for the Tokyo 2020 Olympic Games qualification period.

Solberg competed with Goncalves at the Rio 2016 Olympics, but the aim is now for him and Felipe to feature at Tokyo 2020 together.

"He is honest and works really hard for his dream," Solberg said.

"We have the same goal and this is the main thing for a team.

"I love to play with younger players, especially with one who listens to you and also brings new things.

"I'm learning a lot with him and also trying to teach him everything I know."

Oleg Stoyanovskiy and Viacheslav Krasilnikov also topped their pool and did so against a team they met last time they were in World Tour action.

After the Russian pair defeated China's Wu Jiaxin and Ha Likejiang 21-17, 21-16, they beat Germany's Clemens Wickler and Julius Thole 17-21, 21-17, 15-7, the team they beat in The Hague four-star final in January.

This is the fifth time that Qatar has hosted a World Tour tournament and it will run until March 16.