Dimitri Patterson has no idea why he’s no longer a member of the Cleveland Browns. None.

Didn’t get an explanation when the Browns cut him on Monday. Didn’t bother to ask for one either.

Patterson, a cornerback still in the first of a three-year, $16 million pact he signed with the Browns last spring, remained apoplectic about the turn of events Wednesday, speaking with Miami media after his first practice with the Dolphins.

Miami claimed Patterson off waivers on Tuesday, bolstering their ailing secondary and in the process, assuming the remainder of his contract.

“You’ve got to ask [Browns coach] Pat Shurmur,” Patterson said, when asked about his exit from Cleveland. “I don’t think [anyone] is happy when something like that happens, unless it’s a real, real bad situation. It’s just something that happened.”

Patterson was far more interested in talking about the opportunity he’ll get in Miami, the town where he spent his first 12 years.

Patterson grew up a Dolphins fans, and remained one until enrolling at Tuskegee University. He still has relatives in the area but was quick to say he’s here for business, not a family reunion.

The sixth-year defensive back got into town around 10:30 a.m. Wednesday, and after passing his physical, went straight to the practice field. The ankle injury that caused him to miss seven games this year is now “100 percent.” He said he can play both nickel and base corner — a versatility the Dolphins might utilize Sunday, if Nolan Carroll is unavailable against Buffalo.

Carroll spent practice Wednesday on the exercise bike after spraining his left knee in the win over Jacksonville. Carroll feared initially he would miss the rest of the season.

“But the next day, I started feeling better,” Carroll said. “I feel a lot better now than how I did on Sunday. It’s only encouraging that [Thursday] I’ll feel a lot better as well.”

Carroll made such strides by Monday that he didn’t even need an MRI, he said. He moved around some on Wednesday, and is hopeful to play in the must-win matchup with the Bills.

But perhaps as an insurance policy in the event he cannot go, the Dolphins also elevated Julian Posey from their practice squad, taking the place of injured reserve-bound running back Daniel Thomas.

Posey, a corner out of Ohio, spent 2011 on the Jets’ practice squad before joining the Dolphins in the same capacity in October.

“It’s a daily grind,” Posey said of life on the developmental squad. “It’s kind of like a construction worker. You go to work each day, put your hard hat on.”

The move left the Dolphins an opening on their practice squad, which they filled by adding Dion Turner, a corner previously with the Packers.

This and that

•  Like Carroll, linebacker Koa Misi (ankle), defensive tackle Randy Starks (personal) and receiver Davone Bess (back) also missed practice Wednesday. Receiver Brian Hartline (back) was limited, while safety Chris Clemons (neck/ribs), linebacker Karlos Dansby (biceps) and safety Jimmy Wilson (hip) all participated fully.

• The Dolphins-Jaguars game scored a 14.5 TV rating in the Miami market, the second-lowest figure in the league among NFL cities last week.