Dreamsparktv.net
Speak with your children they should be able to get you the exact website to watch your grandson play.. If not they can also facetime you while at the game so you do not miss anything.. Some games are not broadcasted..
You can catch live games only on fields 1-10 daily. Recaps are available for games on the main website.
I believe there's a 'game changer' app that a lot of the parents of kids on the team use. Apologies that I don't know more. Ask mom & dad, they'll probably know. They may also have a login already that you might be able to use.
Thanks! Your answer is awaiting moderation.