Yes, there is. You can change outcome of the match (if you know exactly what are you doing).
Few days ago my team played match and I started watching it at 70'. Result was 2-1 for opponent (home team). He was present, used 43n12. My formation before match was 4411. Then I made 2 subs, changed formation to 3142 and won match 2-3, both goals scored in last 10 minutes.
Important thing is to avoid players in bad form. No matter how high their quallity is, they are useless!