Source: Jets' Drew Coleman gets MRI

FLORHAM PARK, N.J. -- New York Jets nickelback Drew Coleman underwent an MRI on his injured knee Thursday afternoon, according to a person familiar with the situation.

Coleman suffered the injury on the last play of Thursday's practice and was helped off the field, but told people he doesn't believe he'll miss Sunday's divisional playoff game against the New England Patriots. Still, the team was concerned enough to have Coleman undergo the MRI.

During his post-practice news conference, head coach Rex Ryan did not know the severity of the injury. Players said Coleman appeared to be in pain.

Coleman covers the slot receiver and looms significant in the Jets' game plan. If he is unable to play, struggling rookie Kyle Wilson would likely be thrust into the nickel role.

"If he can't go, sure it would be a blow," defensive coordinator Mike Pettine said. "But again, that's something we'll have to figure it out with the depth of our back line. Obviously [we could fill in] with Kyle, Dwight Lowery, Marquice Cole and possibly by making Isaiah Trufant active."

If this sounds familiar, it's because the Jets lost safety Jim Leonhard to a season-ending injury in a freakish practice collision three days before the Jets' 45-3 loss to the Patriots in Foxborough on Dec. 6. Without Leonhard, the quarterback of the secondary, the Jets surrendered four touchdowns to the Patriots' Pro Bowl signal-caller Tom Brady.

Lowery laughed when asked about the possibility of a pre-Patriots jinx.

"Maybe they flew over our facility and put a magic spell on us," Lowery said.

Wide receiver/kick returner Brad Smith (groin) was limited and his status is also uncertain.

Smith, who participated in team drills during the portion of practice open to the media, said he'll likely be a game-day decision.

"I'm feeling better," Smith said. "I was able to get some reps, do some more individuals, things like that."

He said he did more running than he did in previous days.

"I'm encouraged by what's going on," Smith said. "Ultimately it's going to be up to the coaches and what they feel would be best for the team and myself."

"We're prepared to go without him, but we'd love to go with him," special-teams coach Mike Westhoff said.

If the Jets don't have Smith, Westhoff said that Antonio Cromartie, whose 47-yard kick return set up Nick Folk's game-winning 32-yard field goal in the Jets' 17-16 victory over the Indianapolis Colts last Saturday, would return kicks.

Cornerback Darrelle Revis (hamstring) and safety James Ihedigbo (knee/ankle) were also limited, but expected to be fine for the game. Right guard Brandon Moore, who didn't practice Wednesday with a back issue, was a full participant.

Mike Mazzeo is a regular contributor to ESPNNewYork.com Information from ESPN NewYork.com's Jets reporter Rich Cimini and The Associated Press was used in this report.