The attacker's red card was soon followed by the only goal during their Championship defeat to Preston.
After Fernando Forestieri was sent off at the weekend, Carlos Carvalhal has hinted to his Sheffield Wednesday squad that they need to keep their cool from now until the end of the season if they hope to secure promotion, the Sheffield Star reports.
The forward was dismissed during the second-half of the Owls' clash with Preston North End on Saturday. And with Simon Grayson's side bagging the winner just seven minutes after Forestieri received his second yellow card, Carvalhal has emphasised the importance of not making the same mistake again.
"These things can happen but we can't repeat these mistakes in the future. We must correct these mistakes," he told the Star, regarding striker's sending off.
Not only did the former Watford man's dismissal put Wednesday at a disadvantage for the rest of the clash at Deepdale, but it also means that they will be without their leading scorer for their next game which comes against Queens Park Rangers on Tuesday.
While Carvalhal's men had started to establish themselves as genuine promotion contenders - having won five of their previous seven games before the clash against the Lilywhites - the defeat has left them just four points clear of the side just outside the top six, while their five point advantage over Birmingham and Ipswich could be cut as both have a game in hand over Wednesday.
And while the club have been well-disciplined for much of the campaign - with Forestieri's red being only their second of the season - Carvalhal will know that losing their heads in future may seriously harm their hopes of securing promotion.