Not exact because 49ers don't do a lot of 4-wide

so image in the slot on the right side is a TE or the full back and he's tighter

the safeties read the slot, route or block, if block they fill---

the DE, NT, and DT all have gap and a half--their initial charge
shows but imagine them squeezing the hole next to them---

the Mike and Money read, if straight ahead, go for you hole,
if flow to right, go that way
the MIKE has to read the QB in case it is read option, and
he, in this case, has the edge since there is no edge player on that side
remember the jack is always opposite of the Star

also, the jack here is too far off the ball, but it's drawn to
have him over the slot to his side....