Why Leonard Fournette isn't a viable alternative to Le'Veon Bell for the JetsFournette's durability a major red flag1/3/2019, 5:04 PMJacksonville Jaguars running back Leonard Fournette runs the ball down to the one yard line as Buffalo Bills free safety Jordan Poyer makes a tackle during the second quarter at New Era Field. / Mark Konezny/USA TODAY Sports