3 : Defense And Reaching Second Level -

To prevent the offense from reaching and neutralizing the second level, defenses focus on two main tactics:

On running plays, offensive linemen try to "climb" to the second level. This means after an initial double-team or chip block on a defensive lineman, one blocker releases to engage a linebacker. If the offense successfully reaches the second level, the running back often gains 10+ yards because the primary tacklers (linebackers) are being obstructed. 3. Defensive Counter-Strategies 3 : Defense and Reaching Second Level

A defense that protects its second level is usually elite against the run. If linebackers are forced to fight off 300-pound linemen all game, they will eventually wear down, leading to "explosive" run plays where the back reaches the safety (third level) untouched. To prevent the offense from reaching and neutralizing