Rafael Nadal and Carlos Alcaraz's highly-anticipated Olympic pairing started with a first-round win over Andres Molteni and Maximo Gonzalez in the men's doubles.
The Spanish duo beat the Argentine sixth seeds 7-6 (7-4) 6-4 in front of a packed Court Phillipe Chatrier in Paris.
Nadal was Alcaraz's childhood hero and the two have paired up in what is expected to be Nadal's final season on tour.
Alcaraz has long been described as Nadal's heir, having won his first French Open title in June before defending his Wimbledon crown just two weeks ago.
Nadal is the more experienced in doubles, winning Olympic silver in Rio in 2016, and it showed, with Alcaraz taking longer to adjust to the movement needed.