OWINGS MILLS, Md. -- The Baltimore Ravens fully expect Olympic swimmer Michael Phelps to attend practice soon. But coach John Harbaugh wants the most decorated Olympian ever to be more than a spectator.

"I'm going to try to talk him into speaking with the team. Maybe now he will," Harbaugh said. "We're just really proud of Michael Phelps."

Phelps won five gold medals and one silver the the Rio Olympics. In what he insists will be his last Olympic race, he won a gold medal in the 400-meter medley relay.

Someone suggested the Ravens ask Phelps bring all 28 of his medals won over three Olympics games.

"Can he carry them all?," Harbaugh said. "How heavy are those things?"

In one of the press conferences at the Olympics, Phelps let everyone know about his allegiance to the hometown football team. He called out a reporter for wearing Pittsburgh Steeler paraphernalia, which amused Harbaugh.

"Yeah, that was fun to watch," Harbaugh said. "And he had so much fun with it."

What really delighted Harbaugh was Phelps' medal ceremony following his victory in the 200-meter butterfly. One of Phelps' friends shouted "O" during the national anthem, which is a Baltimore tradition that started at Orioles games and has carried over to the Ravens.

"That was awesome and huge," Harbaugh said. "My wife and daughter and I knew all exactly what it was. We started laughing. We all knew it. Maybe the rest of the country didn't know it, but all of us knew. They didn't know but we did."

The Ravens have embraced Phelps' historic run in the Olympics. During Thursday's preseason game, the team aired Phelps' gold medal-winning performance in the 200-meter butterfly on its video board.