Overview Nick Kyrgios has been a big critic of Jannik Sinner since his doping ban Sinner recently reappointed Umberto Ferrara, his former coach, as his new Fitness Trainer Kyrgios claimed that everyone was played by Sinner and his team Nick Kyrgios took a dig at Jannik Sinner reappointing Umberto Ferrara as his coach with a post on X.

World number one Jannik Sinner reappoints fitness coach Umberto Ferrara less than a year after they parted company.

Wimbledon champion Jannik Sinner has re-appointed his former fitness coach Umberto Ferrara with immediate effect, the Italian world number one confirmed on Wednesday.