Getting a "Cannot be Opened"" error Message

[valerydolce]

So, i was trying to read the score from the end. Instead of using  scores = game[-1]   i used  scores = game[1]. However i got a new error 

Error:
Traceback (most recent call last):
  File "./hw2.py", line 25, in <module>
    print(team_average('red_sox.txt'))
  File "./hw2.py", line 20, in team_average
    if (int(score[0]) - int(score[1])) > 0:
IndexError: string index out of range