Part 3/10:
Each gap on the offensive line is labeled for clarity. The gaps closest to the center are referred to as A gaps, while the outer gaps are termed B gaps. Offensive lines prioritize protecting the A and B gaps as interior pressure can quickly doom a play. Defensive linemen, identified by their techniques, are also positioned relative to these gaps, with the alignment directly over the center being referred to as "zero Tech" and moving outward from there.