As previously thought, Inter would take advantage of the home match to win in the first leg. Marko Arnautovic goal gave Inter Milan a 1-0 victory over Atletico Madrid, this result is certainly an important asset for Inter heading into the quarter-finals. Atletico were not able to do much in this match, Inter managed to lock them up with a very brilliant game. Inter's appearance this season is more competitive after reaching the Champions League Final last season. A performance like this is an important asset for Inter to win the UCL title, it is very realistic to be able to reach the final round again if they are able to maintain their performance.
However, unfortunately the 1-0 lead was not safe for Inter Milan, whose second match had to go to Atletico Madrid's home ground, and to be honest, seeing this result made Atletico Madrid the favorite to advance to the quarter-finals of the Champions League, because even though in this first match Atletico didn't seem good against Inter Milan because they didn't even have a single shot on target but the home factor in the second match would give Atletico more of an advantage.
I actually find it quite strange that Inter Milan was only able to win by a narrow score, they should have scored at least two goals because with a two goal lead it would have put even more pressure on Atletico. In the second match, Inter Milan had to continue playing aggressively to at least make the match end in a draw.
And Dortmund just drawing against PSV isn't that bad because the second match will be the deciding factor and Dortmund still has a bigger chance of qualifying, and I'm pretty sure Dortmund will qualify for the next round.