A Gap is a hole in your players defense that allows your ball carrier to get past without being tackled. If your opponent is defending well there should be no Gaps in his defense. If this is the case you need to create the Gaps using your players! The only way to do this is to run your ball carrier at the defenders - it sounds crazy, but by doing this you force the defenders to tackle and become grounded - grounded players can not tackle. This creates gaps! Now all you have to do is pick up the ball and run through it!