Marcel Granollers and Horacio Zeballos will make their sixth consecutive appearance at the Nitto ATP Finals. The Spanish-Argentine duo advanced to the championship match in 2023 and the semi-finals in 2020 and 2021, falling to the eventual champions on each occasion.

The veteran doubles players entered the 2025 season having not won a major title together. But they changed that in a big way by triumphing at Roland Garros and the US Open.

Granollers and Zeballos also claimed trophies at the ATP Masters 1000 event in Madrid and in Bucharest.

Granollers will make his 10th appearance at the Nitto ATP Finals and try to secure his second crown after lifting the trophy with Marc Lopez in 2012. It will be Zeballos' sixth appearance.