What happened to riders like Baz and Bradl?

I’m not a regular on Moto GP but I noticed they are both off the grid now (Bradl had a wildcard at an event). How come they aren’t racing anymore in the Moto GP?
Submitted September 12, 2018 at 12:33AM by BrandonFeeley https://www.reddit.com/r/motogp/comments/9f2iwe/what_happened_to_riders_like_baz_and_bradl/?utm_source=ifttt