In the biomechanical review of Gary Kubiak, we discussed how Kubiak designed a technical approach to playing QB that maximized vertical accuracy at some cost to horizontal throwing range (if you haven’t already, you can read it here). This approach complements the systemic design of the Shanahan/ Kubiak offense, which schematically stretches defenses wide with the run game, while attacking defenses vertically with the pass (often from a half-field read off of a bootleg).
From a biomechanical perspective, Joe Flacco is a perfect fit for this offense. His strengths and weaknesses as a passer perfectly mirror the strengths and weaknesses inherent to the offense designed by Gary Kubiak and Mike Shanahan. Where Kubiak designed techniques to borrow from posterior lateral areas to enhance vertical throwing accuracy, Flacco is naturally extremely efficient in his posterior lateral areas. Where Shanahan designed an offense with simplified reads and limited horizontal throwing range, Flacco excels when he can avoid full-field reads and quick changes of horizontal direction (due to compromised anterior medial efficiency).