Genoa won 2-1 on Friday night, with Mimmo Criscito converting a last minute penalty.
"It's really difficult to describe the feelings," an emotional Blessin told Sky Italia.
“We started not good, the first 20 minutes we dropped too deep, we got better, but we needed the players to believe. We made changes, I wanted more of a box-to-box player with deep movements.
“After three minutes of the second half, you concede this goal and you think oh f***. You made a mistake. At this moment you have real problems, think ok, perhaps it wasn't the best decision, but the players believe in the way we play and showed a great mentality."
Blessin was thrilled for Criscito after his derby failure against Sampdoria.
"You see last week Mimmo not scoring the penalty, now he has the responsibility and it is unbelievable how much pressure is on his shoulders at this moment. Winning this game, you cannot say it's not deserved. We tried everything, showed a really great mentality.
“For sure, we are still in this position, but we are close to the other teams and we are back on track.
“You saw this week his training, his performance. I talked to him, told him head up, the next chance will come. Usually when you talk to the players, they don't believe you, but I felt the sensation we can still reach this. He has this experience, this really great left foot and it was nice to see his performance today after last week.
“This is why we love football! Mind you, I feel 30 years older now…"
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