The Miami Dolphins took the field for a joint practice with the Detroit Lions on Wednesday ahead of their upcoming preseason contest on Saturday. Throughout the day, the Dolphins’ biggest weakness was on full display thanks to an electric performance from Lions superstar wide receiver Amon-Ra St. Brown.
Thanks to a slew of injuries and the team’s decision to trade Jalen Ramsey to the Pittsburgh Steelers, Miami’s secondary, particularly their cornerback room, is depleted. And after practice on Wednesday, it’s safe to say that those concerns grew thanks to St. Brown running a clinic against the Dolphins’ various defensive backs.
Amon-Ra St. Brown Torches Dolphins Secondary at Joint Practice
By now, St. Brown is widely regarded as one of the best wide receivers in the league. He’s earned three-straight Pro Bowl selections and back-to-back spots on the All-Pro First Team, and he’s shown no signs of slowing down as he prepares to enter his fifth season in the league. In fact, you can make an argument that he has never looked more dominant.
The Dolphins’ secondary appears to be their biggest weakness entering the season, and St. Brown did them no favors on Wednesday. While the decision to trade away Ramsey was expected, season-ending injuries to Artie Burns and Kader Kohou, two guys who were set to start for Miami, were not expected. At safety, Ifeatu Melifonwu, Dante Trader Jr., and Ashtyn Davis have all missed time throughout the start of training camp for various reasons.
The Dolphins are leaning on a rather uninspiring cornerback group that features Kendall Sheffield, Storm Duck, and Mike Hilton. Sheffield hasn’t started at cornerback since 2020, when he was with the Atlanta Falcons. Duck is a second-year player who went undrafted last year, and Hilton is a veteran slot corner whose skills appear to have begun declining as he enters his age-31 season.
If fans weren’t concerned about the state of their secondary, they are now after St. Brown’s demolition of the unit on Wednesday. No matter who he went up against, St. Brown seemed to win his reps, and he was so good that Detroit compiled a one-minute highlight reel of his standout plays and shared it in a post on X.
What Should the Dolphins Do with Their Cornerback Room?
GettyMIAMI GARDENS, FLORIDA – JULY 28: Head Coach of the Miami Dolphins Mike McDaniel speaks to players at practice at Baptist Health Training Complex on July 28, 2025 in Miami Gardens, Florida. (Photo by Carmen Mandato/Getty Images)
Injuries are a part of the NFL, and the Dolphins are finding that out the hard way to begin the new season. Yes, St. Brown is incredibly talented, but anytime a team can string together a highlight reel from plays that happen at one practice, that’s typically not a good sign. Miami’s secondary was beaten all day long by one player; what will happen when the pads are on and the games actually matter?
There’s still time for the Dolphins front office to bring in some help at this spot, and after their latest practice, that may not be a bad idea. The problem is that the majority of the best options are off the board already, which will make it difficult for the team to upgrade this spot without sacrificing talent or draft capital. The concerns about Miami’s secondary are real, and unless something changes soon, it could end up tanking their entire season.
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