J-Block

A J-block (or J-path block) is a perimeter release path used extensively in Option football (Flexbone, Wishbone, Triple Option) and modern spread option attacks. An off-ball slotback, tight end, or H-Back bypasses the defensive end on the line of scrimmage, tracking in a curved 'J' path to block a second-level linebacker or alley safety.

Technique and path:

The Drop & Loop

At the snap, the blocker takes an initial lateral drop step to clear the line of scrimmage, curving outside around the playside defensive end without making contact.

The Upfield Turn (The Hook of the 'J')

Once past the edge defender's outside shoulder, the blocker plants and turns sharply upfield, completing the hook of the 'J' to seal the scraping linebacker or perimeter force defender inside or outside.

Why the edge defender is left unblocked: In option schemes like Outside Veer, Midline, and Power Read, the defensive end on the line of scrimmage is the quarterback's read defender. Blocking the end is unnecessary because the quarterback reads his movement (handing off or keeping based on his crash). The J-block accounts for the *next* defender in the alley, ensuring that if the ball reaches the perimeter, a lead block is already established on the second level.

How the J-block compares to other edge blocks:

J-Block vs. Reach Block

A reach block directly engages the edge defender on the line of scrimmage to hook him inside; a J-block intentionally bypasses the edge defender to block the second level.

J-Block vs. Log Block

A log block is a pull assignment that seals a crashing edge defender inside; a J-block releases around the edge defender without engaging him.

J-Block vs. Arc Block

In modern coaching terminology, 'J-block' and 'arc block' describe the same concept: J-block is the traditional option/flexbone term originating from the distinct letter-'J' path on the chalkboard, while arc block is the standard spread/shotgun term.