Answer:
scapegoat theory
Step-by-step explanation:
We all have the tendency to blame someone else for our mistakes, at least whenever we can. Very few people assume the responsibility for their actions, and most of us like to blame someone else.
The scapegoat theory is just about that, blaming someone else (or some other group) for doing something bad that wasn't necessarily his/her responsibility or was only partially responsible for it.
In this case, the whole team lost, and many mistakes were made by both the defense and the offense before the kicker missed the field goal. But it is easier for the fans to blame the last person who made a mistake, and forget about the mistakes made by the rest of the team.