Kalidou Koulibaly was sent off in Napoli’s 1-0 defeat against Cagliari in a Serie A game on Wednesday.
The 28-year-old defender, who was making his fifth league appearance this season, received his sixth career red card in the encounter.
After a goalless first half, Lucas Castro broke the deadlock in the 87th minute off Nahitan Nandez’s assist.
Moments after the goal, Koulibaly was shown a red card by referee Marco Di Bello, apparently for dissent.
Castro’s effort then was enough to hand the Red and Blues all three points and end Carlo Ancelotti’s Napoli three-game winning run.