Liufau (knee) was waived/injured by the Buccaneers on Saturday, Scott Smith of the team's official site reports.
The decision hardly comes as a surprise considering who was ahead of him. It's unlikely the team was going to take more than three quarterbacks into the the regular season, and with Jameis Winston and Ryan Fitzpatrick cementing roster spots, it came down to a battle with veteran Ryan Griffin, which Griffin won. For now, it looks like Liufau's fantasy value is close to the floor.