
We come out in 21 personnel with twins to the left and Miller set out wide. The LB on Miller and CB on Boldin reveal man coverage. In response, CK changes the play - you can see him come up to the line then audible out and turn around and tell Gore the play.

We then motion Miller into the backfield

We're going to run a simple power play - this is one of our staple running plays. The key block will be from Staley, but he's got a good angle. He has to block the DE down away from the play.

Staley gets beat fairly bad inside though.

This then, causes Miller to not be sure if he should help Staley out or continue on to block the LB

Gore's then left with nowhere to go

You see Staley talking to Miller after the play trying to square away what should've happened.
2nd down and 11, 11:00 to go in the 2nd QTR

We stay in 21 personnel. Pre-snap, we see a 2 deep safety look from NY, the Corner on the TE side reveals zone coverage.

^ I drew VD's route going the wrong direction - it's an out route. We motion Miller over to an off-set I which reveals a cover 3 look when the safety comes down. We have a double post on the twins side with a mid-out from VD. The reveal of cover 3 zone with your 3 layer middle routes gives your QB a hi/lo read. There's only going to be 2 defenders in the middle of the field - but, CK doesn't look to the underneath routes.

After the snap, you see the LB taking a deeper drop, looking towards Boldin. The safety, also worried about Boldin's threat - and because CK did keep his head in the middle of the field this time, stays in center field. This does open up a small hole for the skinny post, but it's a tight throw.

You see Ck had Hyde for at least 4-5 yards on the play, and Boldin is gonna be open in a half second. The play design is there to open up at least getting a few yards to give a 3rd and 5 or 4. Instead, Ck sees the small window for a bigger play and tries to fit it in.

It's a tight window - CK gets it there, but Crabs can't make the catch - he did get popped hard on the play and the corner was also there to get in on the play.
It's up to you if he made the right throw or not - personally, I don't like 2nd and long as your time to take a shot. You should at least get something so that you make it easier on 3rd down.
3rd down and 11, 10:21 to go 2nd qtr
We come out in a 2x2 set with Johnson and VD at the bottom and Lloyd and Boldin at the top. The giants give a cover 4 shell look - they'll stay in that defense.
As the play develops, you see how the LB is going to be a tough spot on VD, he has to be aware the the threat from an out breaking route from the RB, but is in a losing situation with inside leverage on VD. Johnson's route will clear out the outside defender as well.

You see VD would've been open - pretty much at the sticks. But, CK - this time, goes to his checkdown - Hyde.

You see how open VD would've been(the corner couldn't see that CK was throwing - that's why he continued to run with Johnson and there's no way the LB stays with VD) and Hyde gets tackled immediately after catching the ball.
Leads to 4th and 5 and a FG.
So, I showed 3 plays in sequence. Each of these had player fails and the team could not respond to a negative play on 1st down. This, and many other sequences like it, are why I come to the conclusions I did in my OP about our team not being able to come out of negative plays and about our QB needing to elevate his game.
It's also hard for me to lay a ton of blame at Roman's feet. I could see a case being made for Solari, or Chryst on those plays, but, hard for me to blame play design. There were plays to be made, yards to gain, we just didn't get em.





