Marx was waived by the Falcons on Monday, Will McFadden of the team's official site reports.
The Falcons' fullback competition is apparently down one player with Marx heading out the door. Marx handled first-team reps during Sunday's practice in what amounted to a final attempt at gauging whether he was worthy of sticking around camp. The rookie is likely to get a tryout with another NFL team in relatively short order, considering he was integral to Bryce Love's monstrous 2,118 rushing yards at Stanford in 2017.