"It was different, definitely different," Smith said. "Those are guys I played a long time with and know very well. There was a lot of talking out there, back and forth from a lot of guys."
It turned out to be a strange reunion for Harbaugh, too.
"It felt a lot like going against my brother," he said. "It was different. It was personal, in the best kind of way. I wish him great success and health. We'll be following him."
Smith was wrestled to the ground at least half a dozen times, the most vicious blow coming when defensive tackle Tony Jerod-Eddie leveled a helmet-to-helmet hit. He was flagged for a personal foul on the play.
Around the league
Browns • Cleveland rookie linebacker Barkevious Mingo remained hospitalized Friday, a day after suffering a bruised lung in the first half of an exhibition game against Detroit.
Mingo, the No. 6 overall pick in the draft, will stay at least one more night at The Cleveland Clinic, where he was taken before the end of the 24-6 win over the Lions.
Lions • Detroit has signed defensive tackles Justin Bannan and John Drew and released cornerback Conroy Black and defensive end Braylon Broughton.
Buffalo 20, Minnesota 16
New Orleans 28, Oakland 20
San Francisco 15, Kansas City 13
New England 25, Tampa Bay 21
• Dallas at Arizona, 2:30 p.m., NFL Network
Tennessee at Cincinnati, 5 p.m.
• Jacksonville at N.Y. Jets, 5:30 p.m., NFL Network
Green Bay at St. Louis, 6 p.m.
Miami at Houston, 6 p.m.
• Denver at Seattle, 8 p.m., NFL Network
Indianapolis at N.Y. Giants, 5 p.m.
Pittsburgh at Washington, 6 p.m.