Student or Learner
Here the context in which I've found this expression:
My inquiries told me that he had been irritated by me questioning whether Liverpool would be able to handle the title run in, whether they would buckle under the pressure.
What it means?
The run-in describes the final matches of the season for a team. If a team has a difficult run-in, they are playing against good teams in their final matches. If they have some easier games, they are said to have an easy run-in.
Ooh, and you need to pay attention to your use of an auxiliary verb in questions. What does it mean?