Some Potential Somewhere...
I think the basis of the game isnt a bad idea but there are some flaws.
For one thing, when the ball instantly moves from the goal to the opponent right after you score just doesn't look smooth. Maybe a second or two leaving it there so the player can register the fact that they made a goal.
Secondly, the game takes WAY too long. 120 seconds for one round where there's only two players is just boring. It's nice that you put up a "health" system that decreases whenever the opponent makes a goal, but at a number of 100 it takes too long to lose, therefore making this game way too easy.
Some things to consider,
KarpOfMagik