Umpires are considering refusing to officiate matches involving Serena Williams, such is the level of discontent over the treatment of Carlos Ramos during and after the US Open final.

The Women’s Tennis Association (WTA) and United States Tennis Association (USTA) have backed Williams’ claims of sexism after she was given a game penalty for her behaviour during her straight-sets defeat by Naomi Osaka, of Japan, on Saturday.

This has further riled some umpires, who were already unhappy with the haphazard organisation of this year’s US Open.

An anonymous official told The Times that there was a growing consensus that umpires were “not supported” by the USTA on several occasions, and that Ramos was “thrown to the wolves for simply doing his job and was not