Holstein Kiel striker, Jae-Sung Lee implied that he felt like he was playing against a wall when he took on Niklas Sule in his team's victory over Bayern Munich.
tied 2-2 with the German champions in normal time before winning the second round tie 8-7 on penalties on Wednesday.
, now aged 28, spotted in the center of the home team's attack but had difficulties playing with
and Lucas Hernandez.
The South Korea international was fascinated by the power of
"You can't even describe how good they are. They are definitely wonderful players,"
"It’s a great chance to play against players like them. This game made me think about more and more what I need to make up for and which things I am short of.
"I was like, am I playing against a wall?! Sule is physically very, very good. In the league, it was not that hard to compete with the opposing defenders, but with Niklas it was definitely another thing."
After the shock triumph,
spends a sleepless night.
"I couldn’t sleep even a second. I don’t know what happened! I feel like dreaming right now and I just remembered the game against Germany, where we won,"
"It’s a similar feeling. But I think this Pokal match touches me more because the match was just yesterday.
"When the score was 2-1, I was like: 'Ok, We did a good job, though'. At the very moment, Hauke ran from back side to forward very quickly and evened the score! I could even not imagine it like that situation. It's not over until it's over."
“I already knew we're doing an excellent job [when the DFB Pokal second round draw was made]. We have good passing play and have had a good season as well.
"So I wondered what it would be like when we meet a team like Bayern, who won the treble last season. I was wondering if we can play our game as usual.
"For sure, it was a very difficult game, but I’m very proud of my team in terms of that we showed our own game to Bayern, we didn’t give up that easily. I’m so proud of it.”