Baltimore came away with a 17-10 win over the Tampa Bay Buccaneers, but it didn't come without a cost.
However, all three appear not be too serious and may not leave the Ravens short-handed next Sunday against the Pittsburgh Steelers.
When asked whether he thought he would be able to play next week against the Steelers, Oher said, "I should be good."
Oher suffered a knee sprain on the Ravens' first series of the second half. He went to the locker room and his return was ruled "probable," but he did not come back and was replaced by Oniel Cousins.
Oher was relieved after the game and said he was in no pain while standing and talking to reporters.
"While it was happening, I thought it could have been serious," Oher said. "But, no, I'm good."
McClain suffered an ankle injury while blocking during a kickoff return. Buccaneers linebacker Dekoda Watson rolled on the back of McClain's legs. He did not return to the game and left the postgame locker room wearing a boot.
"Right now they're saying day-to-day," McClain said. "They don't really know now. It's good, I have my ankle taped up real good and got ice on it."
McClain was also already wearing a stimulation machine. He told media that he had an X-ray at the stadium, which came up negative, but didn't undergo a magnetic resonance imaging (MRI) exam.
"You'll see me in treatment, 24/7," McClain said. "I've got to get this thing right. I've got to play Sunday against Pittsburgh. That's my main thing."
Landry suffered a concussion after a hard collision with Buccaneers running back Carnell "Cadillac" Williams during the third quarter. Landry leveled Williams, but took the brunt of the blow and did not return.
He also said he'll be "fine" next week versus Pittsburgh. Landry seemed in good health speaking to reporters in the locker room afterwards.
"I was fine the whole time," Landry said. "I just stayed on the ground to gather myself. I had a little headache for a little, but I was fine."
Landry said the headache gradually subsided. He was on the sidelines barking signals to his fellow secondary mates for the rest of the game.