The development of Broncos left tackle Garett Bolles is undoubtedly important and he will be tested Sunday by Seattle defensive end Frank Clark. Same for Connor McGovern settling in at right guard, a musical chairs position last year.
But left guard Ron Leary may be the lynchpin to the offensive line.
If he stays available and effective, the Broncos could accomplish their goal of being an offense that runs to set up the play-action pass and then once they get a lead, can extinguish the fourth quarter clock with that same run game.