Why we used many one relationship instead of using one to one re;ation ship?

I am going through learning path for microflows. I came across creating relationship. I had one question. In the last diagram of the screenshot I added, why did we created many to 1 relationship between match and team and why did we not have only 1-1 relationship? My understanding is one match can have only 1 home team and 1 match can have only one away team. Pleas correct me if I am wrong and please help me understand this. Thanks  
1 answers

It's correct that one match can only have two teams (one home, one away), but one team can play multiple matches! Maybe I'll play one match today and one next week, both as the home team :)