The Swans boss said he would be asking referee Dean Whitestone for an explanation of why he did not award his side a penalty in the 74th minute when Vipotnik appeared to be pulled back by Lions captain Jake Cooper as he stretched to turn in a Josh Tymon cross.
Despite animated appeals from Vipotnik and his team-mates – as well as Sheehan and his coaching staff – Whitestone waved play on leaving the Irishman irked with the decision.
It would be the second contentious decision in successive games that had gone against Swansea, who had a Vipotnik goal incorrectly disallowed for being offside during last Saturday’s 1-0 defeat at Birmingham City.
“It was a stonewall penalty – I don’t know what else to say,” said Sheehan in his post-match press conference.
“These are the decisions right now; we had one last week and now this one.
“When the league is so tight, with teams from the bottom beating sides at the top, these are the games in which you want to keep accumulating points so it’s a decision I feel the referee got wrong.
“You have to give referees 30 minutes after the game before speaking to them and so I’ll be asking him why he got it wrong.
“Unfortunately, it’s gone now, and we don’t want to be a team that is unlucky and whingeing about decisions, and we know we need to be more clinical in the final third.
“We were very good for large parts of the first half and then got the goal. But we conceded a set-piece on the stroke of half-time that we didn’t defend properly.
“We’ve got to find a way of getting that second goal.
[Lead image: Swansea City FC]
