At Wimbledon in 2017, Medvedev was fined after emptying his wallet and throwing coins at umpire Mariana Alves following a five-set loss to Belgium's Ruben Bemelmans. He disputed a series of controversial calls and said after the match "it was very hot out there" and couldn't remember if he'd asked for Alves' removal.

A photographer walking on the court at match point sparked a decision that infuriated Daniil Medvedev and caused a six-minute delay.

During the opening round of the US Open in New York on Sunday night, Daniil Medvedev lost his cool following an incident with a photographer.