Tottenham defender Davinson Sanchez was subjected to racial abuse on social media following Sunday's 2-2 draw at Newcastle.
The 24-year-old Colombian endured a difficult afternoon at St James’ Park with a number of sloppy moments, including a poor clearance that led to the Magpies’ opener.
He posted a picture on his Instagram Stories after the match showing a series of monkey emojis that he had been sent, and wrote "Nothing changes" alongside a sleeping emoji.
Spurs offered support to their centre-back in a tweet which read: "We are disgusted by the racist messages received by Davinson Sanchez today and are calling on social media platforms to take action. We stand with you, @daosanchez26, and all those continuing to suffer abuse online."
In Spain, meanwhile, Valencia's players left the pitch in protest during their La Liga match at Cadiz after a racist comment was allegedly made to defender Mouctar Diakhaby.
Diakhaby reacted furiously following a clash with Cadiz defender Cala during the first half of the match at the Estadio Ramon de Carranza.
After remonstrating with the referee, Diakhaby led Valencia's players off the pitch.
They subsequently decided to come back and continue the match, with the east coast club tweeting: "NO TO RACISM. The team have held a meeting and decided to continue the game, in order to fight for the honour of the club, but denounce racism of any kind.
"We offer our complete backing to @Diakhaby--5. The player, who had received a racial insult, requested that his team-mates return to the pitch. WE SUPPORT YOU MOUCTAR."
Diakhaby did not return, with Hugo Guillamon coming on in his place, but Cala remained in the Cadiz line-up.
Valencia later released a statement saying the players only went back onto the pitch because of the threat of a sanction for not completing the game and expressed disappointment that it was left to them to take action.
The statement read: "We are proud of the support that Diakhaby received from his team-mates, and of the decision taken to leave the field of play together.
"We trust that the matter will be investigated. We are disappointed that no official decision was taken.
"The club does not ask the players to return to the pitch. The referee informed the players of the consequences of not going back out onto the field of play. The players, forced to play under threat of penalty after the racist insults and the yellow card to Diakhaby, decide to return to the pitch.
"The events of today should not be repeated ever again on a football pitch. Valencia CF strongly oppose racism in all forms and stands with Diakhaby.
"Today is a sad day for our sport. Today was not a loss in a game. It was a loss of respect, a loss of the spirit of football and sport."
Cadiz coach Alvaro Cervera defended his player, saying on cadizcf.com: "It's the first time something like this has happened to us and we did not know how to react.
"There was a lot of confusion, but Cala insists he did not insult him. We’re a faithful, honest team and we don’t do this kind of stuff. That’s what I can say."
On Saturday, Republic of Ireland forward Callum Robinson was sent racist abuse online following his starring role in West Brom's victory at Chelsea. Albion confirmed the matter had been reported to police.
Rangers forward Kemar Roofe also highlighted disgusting messages sent to him, writing on Instagram: "I wonder if you tag @instagram @europaleague in the comments they will see it and take notice?"