[Plugin: leaguemanager]

I’m now building a new site to the Israeli inline hockey league.

And we have a problam with the leaguemanager plugin:

In case of to teams have the same amount of points, the plug in put the team with most Goal difference in the higher rank.
But in our league the rule about tied points goes like this:

In the mach between two team, the winner is getting the higher rank.
Olny if it was a tie, then we are considering the Goal difference.

So, how can we do such thing?
I thought about adding another rule (Based on the NHL rule).
But I don’t know PHP that well.