In an enthralling spectacle, Juan Arango's stunning free-kick looked to have given Lucien Favre's men a first-leg advantage, only for substitute Libor Kozak’s late leveller to spoil the party.
"When you're winning 3-2 and a man up, you have to win the game. That can't happen, and we should be doing better," said defender who scored one penalty, missed another and hit the post.
Similar sentiments of regret were expressed by who commented: "The third goal killed our mood." The 31-year-old, who scored his spot-kick to make it 2-2 with six minutes to play, reiterated his belief that the Foals can qualify for the last 16. "We'll go to Rome confident that we can qualify, and I believe we can do it."
For a team renowned for its defensive organisation under Favre, Gladbach's backline are causing the Swiss coach numerous headaches at present. The Foals have conceded nine in their last four games and six in their last two ahead of Saturday's Bundesliga trip to Hamburger SV, where that recent fragility will be put to an even greater test.
Hamburg are still riding a wave of optimism after their 4-1 hammering of Borussia Dortmund last week, but right-back Tony Jantschke insists that the Foals can foiltheir northern hosts: "We know Hamburg are playing well right now, but we'll go there looking for something from the game. We don't have any fear."