Slot said: “Isak playing 84 minutes had a lot to do with the low intensity of the game.
"If you face a low block, 10 players in and around their own 18-yard box and when they have to do a build-up they take a while with hardly any intensity.
“In a more open game where you have to run a lot as a nine, then you might not play him for 84, but this was a game in which it was a low block with some bursts of counter-attacks.
“He was close to a goal, very honest to stay on his feet, got a little bit of a shirt pull and that’s why he was unbalanced when he shot. So that was maybe just enough, smart little push to get him unbalanced. He didn’t score but it was quite a good performance.
Speaking on his selection, Slot added: “We wanted to overload the midfield with Wirtz in the first half which is why we didn’t start with Cody.
“But if you’re 1-0 down and need a goal you prefer to have width both sides and that’s why we brought on Cody. That’s why we brought on more attacking players and took a risk. The way we played first half wasn’t what I was hoping for before the game."