Running double moves is difficult, but if done well, it can kill man coverage. I wanted to highlight Crabs and how he used some precise route running to create separation. Coupled with anticipation throws from Kap, this combination is unstoppable in single man coverage.
Below: This is play #13 in the thumbnails, but what I drew for Crabs in that thumbnail doesn't do the route justice, so I had to draw it again. Crabs runs a double move, corner to out, pattern. The 49ers had been running a few smash route combinations (more on smash later) earlier in the game and this route that Crabs runs is using the smash concept (corner route ) as a setup.
Below: Crabs will first sell the corner route as he drives directly towards the outside hip of the CB. Kap is seen already pulling the trigger.
Below: Once the CB has his hips turned downfield, the final cut in Crab's route takes him to the out pattern and separation is created. More separation is actually created, not shown on this pic.
The play: Double move + anticipation throws kills man coverage.
On the very next pass play, a triple move(!) as Gruden called it a 'Dino' pattern on the telecast and calls it out as a post-corner-post, mentioning how hard of a route it is to execute. Jonnydel breaks this play down in post #34. I wanted to concentrate just on Crab's route as I don't think jonnydel's drawing of the route did it justice
Below: Crab's actual pattern.
Boldin, for all his savvy and smarts, is not the route runner Crabs is. It's all about not losing speed coming in and out of the cut(s). As Crabs starts to beat man coverage consistently, I can see the 22 personnel get very effective as either Crabs or VD will be in single coverage going against a single high safety.