Utrecht has twelve players on the pitch at one stage during Sunday's 1-1 draw with Ajax at the Stadion Galgenwaard. No, the home side weren't cheating but instead Utrecht winger Edouard Duplan had no idea he had been substituted midway through the first-half. The referee blew on 24 minutes amid confusion Utrecht had an extra man on the pitch and marched over to Duplan. Edouard Duplan is spoken to by the referee as Utrecht appear to have twelve players on the pitch against Ajax . The referee points at substitute Tommy Oar on the field of the play and Duplan appears to realise his mistake . Duplan makes his way off the pitch and hops over the advertising hoarding to the Utrecht bench on Sunday . Duplan sees the funny side of mishap and laughs with the bench during Utrecht's 1-1 draw with Ajax . The Frenchman protested but suddenly seemed to realise substitute Tommy Oar was now on the pitch and soon made his departure. With a hop over the advertising hoardings, Duplan saw the funny side and attempted to explain the mix-up to his team-mates on the bench. Having briefly had twelve players on the pitch during the first half, Utrecht ended the game with 10, following Ramon Leeuwin's sending off in the 87th minute. Leeuwin didn't have the best of afternoon's after putting the ball into his own net to give Ajax the lead before Gevero Markiet equalised for Utrecht with five minutes to go. Australia international Tommy Oar replaced  team-mate Duplan in the 24th minute of the Eredivisie clash .
Utrecht briefly had twelve players on the pitch against Ajax on Sunday .
Winger Edouard Duplan hadn't realised he had been substituted .
Frenchman saw funny side and made his way off the pitch during 1-1 draw .