Now that Harbaugh has reviewed the game, he said it's clear that Simon deserved the personal foul.
"John dumped the guy after the whistle," Harbaugh said. "We saw it on tape. It was foolish. It was just a bad penalty. There was really no reason to do that. John, right away, when he came off the field, he said he messed up. That's not something that we need to have."
Koch entered the game with a 48.9 average, but had a season-low 34.2 average Sunday. That included a pair of 26-yard punts in the first half that the 2010 Pro Bowl alternate tried to angle toward the sideline.
"That was very un-Sam-like," Harbaugh said. "Those are two shanks that he usually doesn't have. We try to punt to the sideline.
"If you hit it a little bit off-center, that's what happens: real short punts. We've asked Sam to do that a lot and he's done a great job of it. On those two, it didn't work out so well."
Shutting down the run
The Ravens stonewalled the Dolphins, allowing just 22 rushing yards on 11 attempts. That's the fourth-lowest by an opponent in franchise history.
It was one week after the Ravens allowed the Buffalo Bills to rush for 203 yards on 55 carries, the most by an opponent in franchise history.
"We stopped the run this weekend," rookie free safety Matt Elam said. "They couldn't beat us."
Juszczyk gets a look
In a rare offensive appearance, rookie fullback Kyle Juszczyk had one pass thrown to him in the first quarter.
It was a misfire on an errant throw by quarterback Joe Flacco, but the Ravens would like to work in the fourth-round draft pick from Harvard more frequently. The Ravens had envisioned a versatile role for Juszczyk with duties at fullback, tight end and H-back.
"We'd like to see more with him, he's coming on," Harbaugh said. "Talented guy, and we're looking forward to seeing how we can develop him even more."