Manchester United defender Lisandro Martinez was sent off after 56 minutes for pulling the hair of Leeds United striker Dominic Calvert-Lewin at Old Trafford.
Martinez, 28, was shown a straight red card and will now face a three-match suspension .
United were trailing 2-0 after Noah Okafor's first-half double when the Argentine tried to stop the Leeds attacker by holding his hair.
Referee Paul Tierney was instructed to review the incident on the pitchside monitor by the video assistant referee (VAR) before sending off Martinez.
"After review, Manchester United 6 is guilty of pulling his hair - violent conduct. Final decision is red card," Tierney announced to the stadium.
The Premier League Match Centre posted on X: "After VAR review, the referee issued a red card to Martinez for violent conduct."
Martinez was making his first Premier League start for United since a 1-1 draw against West Ham on 10 February, after recovering from a calf injury.
