I have niche fanpage ans no idea how to monetize it.

My brother(huge basketball fan and web designer) and I (tech guy) have small fan page about streetball in Poland, mostly info about upcoming tournaments and news from polish teams playing in international tournaments.
We have a website but it's basically a list of upcoming tournaments and we don't update it regularly as most people use our facebook page. My brother is doing it as a hobby, but thanks to this little project he could talk with top polish streetball players and tournament organizers.

Now we're thinking how to monetize it, as it's quite a lot of work to make a good list of upcoming tournaments because information about them is very fragmented, some are on tournaments fan pages, some are on some small local websites etc.

Do you have any suggestions/ideas how to monetize it?