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I ate at The Stinkin' Rose last night just for this moment.
Jim Harbaugh, offensive coordinator Greg Roman and defensive coordinator Vic Fangio all deserve plaudits for their game plans and adjustments against Detroit.
Offensively, the Niners didn't let the Lions front four dominate the game and constantly kept the Lions off balance by switching their alignments and formations up front, using unbalanced lines, six and seven offensive linemen at times, multiple tight ends, extra fullbacks, whatever it took.
The Niners had a lot of success using the same basic trap play to spring Frank Gore for second and third-level runs over and over, with Joe Staley and Mike Iupati sealing off defensive tackles and strong side linebackers.
The coaches went to the well too much with the jumbo formation and it didn't work out well on 3rd-and-short or in the play-action, but otherwise the offensive plan was sound, even if it hardly featured Randy Moss.
The 49ers had so much success running the ball that they were able wear down the Lions defense enough where Smith had time to throw on crucial third downs late in the game.
On defense it was mostly Cover-2 from Fangio, with the safeties giving a lot of deep help on the receivers outside, and the Lions tried to counter it by having Calvin Johnson run a bunch of short crossing routes with the tight end picking off his corner.
Either the coaching staff alerted the linebackers that this would be coming, or Patrick Willis and NaVorro Bowman were good and smart enough to figure it out on their own. Either way, the tactic didn't work for the Lions.
Detroit also ran the ball a lot more than anticipated, but again the coaches had the defense ready for that possibility.