People are curious about Dortmund's performance because they are wondering how successful they will be after selling Haaland. They weren't too impressive against Leverkusen in their first league game but they still secured a 1-0 win. However it is obvious that they still need a significant improvement in their effort. This is not enough for staying in the title race mathematically for a long time. I'm not saying that they can keep up with Bayern Munich until the end but at least they can hold on for longer.