Simon Silwood, a 50-year old U.K. man, was sentenced to eight weeks in prison on Thursday for racially abusing West Bromwich Albion midfielder Romaine Sawyers online.
Silwood targeted Sawyers after West Bromwich lost 5-0 to Manchester City in an English Premier League match in January.
The Birmingham Magistrates Court found him guilty of having posted a "grossly offensive message."
West Bromwich banned Silwood for life earlier this month.
The Crown Prosecution Service (CPS) said during his police interview, Silwood admitted to posting a message on social media after becoming upset by the 5-0 defeat but blamed an error made by using predictive text.
The judge said his message was "motivated by or demonstrated hostility based on race."
"Silwood deliberately chose a word known to have clear racist connotations to abuse a footballer due to the color of his skin. Such behavior will not be tolerated in football and will be prosecuted by the CPS," said Mark Johnson of the CPS.
The court ordered Silwood to pay 500 pounds ($684) in compensation and 500 pounds in court costs.
West Bromwich was relegated at the end of last season.
Several players have been subjected to racial abuse online in recent months, especially in the Premier League, and English football has been piling pressure on social media firms to do more to tackle the problem.