This is the 3rd and 4 from the first offensive series of the game. We'll see if anybody likes the illustrated version.
Adjustments were made at the line to deal with the blitz before Welker went in motion. When wide receivers look down the LOS and see the protection maxed out like this they know to make their routes shorter and sweeter than normal.
Gaffney clears out the area Welker is running his quick out in, but Barber has him in man and jams him at the sticks. This is a problem because Welker take time to beat the jam, while Hovan beats Mankins cleanly to his outside shoulder.
Hovan hits Brady right when he releases. Welker makes his cut right at the sticks because of the jam. Normally you'd like to see the quick out cut finish two yards beyond the sticks, because its supposed to hook back at the end in order to make it harder for the corner to jump in front and pick six. However, there's a blitz on, so Welker cuts straight to the sticks and hopes Brady puts it high on the sideline.
It's on the sideline, but its two yards short, and Welker has to come back for it. Welker did nothing wrong, Brady did fine, and Mankins probably felt like punching someone in the balls. Barber and Hovan are the heroes for the Bucs.