The Grob has quite a few master advocates. Examples include Grob himself (Which the opening was named after) and IM Basman, who regularly plays the Grob in rated games. It's an interesting opening with not a lot of analysis which is not technically sound, but very fun to play with.
Claude Bloodgood, a criminal and chess player, wrote a book about the Grob while in prison, called The Tactical Grob. He reached a peak rating of 2789 by playing correspondence games in prison, using only the Grob.
Claude Bloodgood, a criminal and chess player, wrote a book about the Grob while in prison, called The Tactical Grob. He reached a peak rating of 2789 by playing correspondence games in prison, using only the Grob.