available and ready to be won or taken in English:

At every election it is unlimited power that is up for grabs.

It is amazing how much effort you can put in when there's big money up for grabs.

I assume it’s up for grabs

Everything is up for grabs in our sales department.

This last piece of cake is up for grabs—who wants it? 2. I don’t know who will get it. It’s up for grabs. 3. When the market crashed, the whole office was up for grabs.

I assume it's up for grabs, because no one's called dibs on it

after those two book, everything may be up for grabs

There are hundreds of prizes up for grabs.