NEW YORK: Daniil Medvedev has split with longtime coach Gilles Cervara after a disappointing year in the Grand Slam tournaments ended with his meltdown in a first-round loss at the US Open. Medvedev, the 2021 US Open champion, and Cervara both posted messages Sunday on Instagram, thanking each other for a successful partnership that included the Russian reaching No. 1 in the ATP rankings. “I am grateful to you for guiding me through all these years and let’s see what life brings us in the future,” Medvedev wrote about their “amazing 8-10 years together” in the caption of a photo of them holding their US Open trophies. Medvedev has won 20 titles but has fallen to No.