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The original was posted on /r/nfl by /u/ItIsYourPersonality on 2024-02-16 01:57:05.
I rewatched the Super Bowl focused on looking for how many non-designed pre-snap adjustments Brock Purdy made. This does not include motions that are part of the design of the play (which occur every single play in the Shanahan offense). Here is the summary:
1st 8:13 - 2nd and 27 - “can” - Result: quick out to McCaffrey for 7 yards
2nd 10:15 - 3rd and 8 - “can” - Result: sack
4th 3:30 - 1st and 10 - “can” - Result: 5 yard run by McCaffrey
OT 13:28 - 2nd and 7 - taps helmet with both hands, seemingly to flip play - Result: 4 yard run by McCaffrey
That is all.
At no point in the game did Brock Purdy point out a blitzer, adjust blocking on the offensive line, signal to a receiver to run a different route, or even perform a hard count to identify the rushers.
The most crucial miss was with 2:00 left in the 4th on 3rd and 4, in which Purdy fails to recognize an unblocked blitzer who easily bats down the pass, when a 1st down would have brought the 49ers close to closing the game out. When the play was snapped, there were 9 seconds left on the play clock, and a hard count would have easily identified the blitzer.
Note that a “can” is when 2 plays are called in the huddle, and “can” means running the 2nd play.
e: Here’s the kicker… the Chiefs played 20% cover 0 defense, meaning man to man coverage across the board with no help, and 40% cover 1, meaning all man except 1 safety playing zone. These are exceptionally high rates to play these coverages. At no point did Brock Purdy recognize these coverages and change a route to take advantage of them. Did Spags recognize that Purdy wouldn’t make pre-snap adjustments, which allowed him to gamble that much on his coverages?