The second time Rick visits the junkyard he gets mud stains on his blue shirt. As he's talking to Jeff the stains are still there. However, after he says that the fight is off and walks behind Jeff, the stains are gone.
The burrito stains on Rick's sweater change shape and location between shots.
In the main event in the junk yard, when Jeff and Rick fight it's to be what's called a "shoot fight" (a real fight between two wrestlers). During the match they keep doing moves and spots that could only be done if it was planned out ahead of time.