Next season, the 49ers’ new defensive coordinator, Robert Saleh, a disciple of Pete Carroll, most likely will run the defense Carroll runs in Seattle — a 4-3 Over.
Here’s what it looks like:
Dan Quinn — another Carroll disciple — runs the same defense in Atlanta:
The Jaguars also used a 4-3 Over the past few seasons. Their head coach was Gus Bradley — the first Carroll disciple — and their linebackers coach was Saleh.
Here are the main benefits of the 4-3 Over:
- The 6-technique (6t) defensive end lines up across from the tight end — an advantage for the defense, because most tight ends these days aren’t quality blockers and cannot handle 260-pound defensive ends. It’s difficult for the offense to run the ball off tackle toward the tight end when he’s getting mauled by the 6-technique.
- The 4-technique (4i) defensive end is big — between 275 and 300 pounds — and lines up on the weak side of the defense across from an offensive tackle. It’s difficult for the offense to run the ball to the weak side when the offensive tackle is trying to hold his ground against a defensive end who’s as big as a defensive tackle.
- The strong safety and weakside linebacker stand near the line of scrimmage, creating an 8-man box. It’s difficult for the offense to run the ball into an 8-man box.
Here are the players the 49ers might use in this defense:
6t: Aaron Lynch
3t: DeForest Buckner
1t: Free agent (Maybe Earl Mitchell)
4i: Arik Armstead
WLB: Free agent (Maybe Malcolm Smith)
MLB: NaVorro Bowman
SLB: Ray Ray Armstrong
SS: Draft pick (Maybe Jamal Adams)
FS: Jimmie Ward
LCB: Tramaine Brock
RCB: Rashard Robinson