Russians Taras Myskiv and Nikita Liamin opened their International Volleyball Federation (FIVB) Chetumal Open account with victory in Mexico.
Veteran Liamin finished fifth at the Rio 2016 Olympics and teamed up with 23-year-old Myskiv in May following a strong campaign last year.
So far the duo have enjoyed three fifth-place finishes and they began their Mexican assault on the four-star Beach World Tour event with an 18-21, 21-18, 15-13 victory against Dries Koekelkoren and Tom van Walle from Belgium.
"It's been amazing to play with him,” Myskiv said ahead of the tournament at Plaza Bicentenario.
"He’s [Liamin] got experience in the Olympics and the World Championships and has also been pretty successful in his indoor career.
"He's always talking with me during training sessions and matches and I feel that it helps me a lot to improve."
The Russians will take on German pair Nils Ehlers and Lars Flüggen tomorrow in their second Pool G match.
Ehlers and Flüggen also triumphed in their opening match, defeating Youssef Krou and Edouard Rowlandson of France 25-23, 21-14.
In Pool B, Grzegorz Fijalek and Michal Bryl from Poland won 21-18, 21-18 against Mexicans Josue Gaston Gaxiola Leyva and Jose Luis Rubio Camargo, while Chilean cousins Marco and Esteban Grimalt won 18-21, 29-27, 17-15 against Kusti Nõlvak and Mart Tiisaar from Estonia.
Brazilians Barbara Seixas and Fernanda Berti defeated Americans Emily Day and Betsi Flint to move top of Pool C in a thrilling women's draw contest.
Seixas and Berti had earlier defeated Canadian qualifiers Julie Gordon and Shanice Marcelle 21-16, 21-15, with Day and Flint overcoming Ksenia Dabizha and Daria Rudykh from Russia by the same scoreline.
The third seeds lost the opening set against the Americans in their bid to top the pool, but fought back for a 16-21, 21-18, 22-20 triumph to remain unbeaten.
Australian's Taliqua Clancy and Mariafe Artacho won 21-9, 21-6 against Mexicans Silvia Herdrick and Atenas Gutiérrez in Pool A.
There was also an opening victory for Japanese pair Miki Ishii and Megumi Murakami.
They scored a first Pool B win, 21-14, 21-19 against Kim Behrens and Cinja Tillmann from Germany.
The pool matches continue in Mexico tomorrow.