Daniil Medvedev and his coach Gilles Cervara have announced the end of their eight-year collaboration, days after the former world number one's stunning first-round exit at the US Open.
Medvedev lost 6-3 7-5 6-7(5) 0-6 6-4 to Benjamin Bonzi in a chaotic clash where the 29-year-old launched a tirade against the chair umpire, whipped up a jeering crowd that prevented his opponent from serving and smashed his racket after the match.
Cervara, named ATP Coach of the Year in 2019, helped Medvedev secure 20 titles, including the 2021 US Open and the 2020 ATP Finals.
"I am grateful to you for guiding me through all these years and let's see what life brings us in the future," Medvedev said on social media.
The decision to end the partnership came after a woeful run in the Grand Slams this year, with Medvedev losing in the first round at three of the four majors and in the second round at the other.
Cervara said he had loved working with the Russian -- "even when it was difficult".
"Daniil our fantastic eight-season adventure together comes to an end. Like a symbolic wink of life, it's after this US Open tournament that we end our collaboration...," Cervara posted on social media on Sunday.
"I will keep in mind your unconventional magic as a player, which is your strength. It will return, I'm sure."

Abu Dhabi advises fans to arrive early for Al Ain, Al Wahda match
Sangakkara, Mahanama named in interim committee to run Sri Lanka Cricket
Focused Fils making a statement ahead of French Open
Atletico hit back to hold Arsenal in cagey Champions League semi-final first leg
Lucky loser Potapova makes history with Madrid Open semi-final run
